What we have here is a list of all Armorer leves from level 10 to 45, but with a twist! Those of you looking for leve-efficiency can look below and see how many allowances you must use to get to your desired level, within reason.

Each listing tells you how many leves you must complete to ding for the first five levels after the minimum acquisition level. In addition, each one also lets to know how many you must complete to push to 5 or 10 levels above. You'll see what I mean below.
Some points before moving forward:

Each listing assumes you have reached the required level with no experience past 0. Keep this is mind moving forward, because you will rarely ever be at 0 XP right when you reach a level.
Repeatable/Charity/triple turn-in leves are noted with asterisks next to their experience numbers. These listings assume you intend to make full use of these leves and turn in the requirements all three times, and hence their listed XP numbers are three times the base (plus bonuses on HQ turn-ins).
To be 100% honest, I recommend avoiding leves until level 20.
If you are looking for mass-leveling I highly recommend repeatables/triples. If for shorter bursts, Ingenuity may be better suited to your budget (though they require travel).

If you're looking for something more compact to have on hand, head over to my Complete Armorer Leves Guide.
Most efficient leve-wise options per tier:

While this does show which leves will give you the biggest XP for your allowance punch, the fact of the matter is triple turn-in leves require a considerably higher amount of effort to complete over their counterparts. The majority of leves mentioned in this list here are triple turn-ins. If you're low on leves, they're great. If not, there are now plenty of reasonable XP reward-giving leves at all level ranges.

Level 10: All Ovo That; Stadium Envy; Still the Best; Greavous Losses
Level 15: Kiss the Pan (Good-bye); Still Crazy After All These Years
Level 20: Get Me The Hard Stuff; Not Enough Headroom
Level 25: Tisket Tasset; Get Shirty
Level 30: Romper Stomper; They've Got Legs
Level 35: Get Me The Usual; I've Got You Under My Skin
Level 40: Distill and Know that I'm Right; Employee Retention
Level 45: Some Dragoons Have All The Luck

Remember: Crafting XP is not taken into consideration in these numbers!
(If you see any mis-types on the numbers, please let me know. I've gone through these a couple of times looking for mistakes, but they always seem to slip through.)
Level 10 leves

All Ovo That (Limsa Lominsa) - 7744 XP (HQ: 15488 XP)
Requires: 1 Iron Skillet
Completions to level: Level 10-11 (11,800 XP): 2 (HQ: 1)
Level 11-12 (15,600 XP): 3 (HQ: 2)
Level 12-13 (19,600 XP): 3 (HQ: 2)
Level 13-14 (23,700 XP): 4 (HQ: 2)
Level 14-15 (26,400 XP): 4 (HQ: 2)
All at once (97100 XP needed): 13 (HQ: 7)
Straight from 10-20 (300200 XP): 39 (HQ: 20)

Waist Not, Want Not (Limsa Lominsa) - 4460 XP (HQ: 8920 XP)
Requires: 1 Bronze Plate Belt
Completions to level: Level 10-11 (11,800 XP): 3 (HQ: 2)
Level 11-12 (15,600 XP): 4 (HQ: 2)
Level 12-13 (19,600 XP): 5 (HQ: 3)
Level 13-14 (23,700 XP): 6 (HQ: 3)
Level 14-15 (26,400 XP): 6 (HQ: 3)
All at once (97100 XP needed): 22 (11)
Straight from 10-20 (300200 XP): 68 (HQ: 34)

Cook Intentions (Limsa Lominsa) - 4460 XP (HQ: 8920 XP)
Requires: 1 Amateur's Skillet
Completions to level: Level 10-11 (11,800 XP): 3 (HQ: 2)
Level 11-12 (15,600 XP): 4 (HQ: 2)
Level 12-13 (19,600 XP): 5 (HQ: 3)
Level 13-14 (23,700 XP): 6 (HQ: 3)
Level 14-15 (26,400 XP): 6 (HQ: 3)
All at once (97100 XP needed): 22 (11)
Straight from 10-20 (300200 XP): 68 (HQ: 34)

Stadium Envy (Swiftperch) - 7794 XP (HQ: 15588 XP)
Requires: 1 Bronze Gauntlets
Completions to level: Level 10-11 (11,800 XP): 2 (HQ: 1)
Level 11-12 (15,600 XP): 3 (HQ: 2)
Level 12-13 (19,600 XP): 3 (HQ: 2)
Level 13-14 (23,700 XP): 4 (HQ: 2)
Level 14-15 (26,400 XP): 4 (HQ: 2)
All at once (97100 XP needed): 13 (HQ: 7)
Straight from 10-20 (300200 XP): 39 (HQ: 20)

Still the Best (Western La Nocea) - 7744 XP (HQ: 15488 XP)
Requires: 1 Brass Alembic
Completions to level: Level 10-11 (11,800 XP): 2 (HQ: 1)
Level 11-12 (15,600 XP): 3 (HQ: 2)
Level 12-13 (19,600 XP): 3 (HQ: 2)
Level 13-14 (23,700 XP): 4 (HQ: 2)
Level 14-15 (26,400 XP): 4 (HQ: 2)
All at once (97100 XP needed): 13 (HQ: 7)
Straight from 10-20 (300200 XP): 39 (HQ: 20)

Greavous Losses (Western La Noscea) - 7698 XP (HQ: 15396 XP)
Requires: 1 Bronze Sabatons
Completions to level: Level 10-11 (11,800 XP): 2 (HQ: 2)
Level 11-12 (15,600 XP): 3 (HQ: 2)
Level 12-13 (19,600 XP): 3 (HQ: 2)
Level 13-14 (23,700 XP): 4 (HQ: 2)
Level 14-15 (26,400 XP): 4 (HQ: 2)
All at once (97100 XP needed): 13 (HQ: 7)
Straight from 10-20 (300200 XP): 39 (HQ: 20)
Level 15 leves

Kiss the Pan (Good-bye) (Limsa Lominsa) - 13146 XP (HQ: 26292 XP)
Requires: 1 Initiate's Skillet
Completions to level: Level 15-16 (30,500 XP): 3 (HQ: 2)
Level 16-17 (35,400 XP): 3 (HQ: 2)
Level 17-18 (40,500 XP): 4 (HQ: 2)
Level 18-19 (45,700 XP): 4 (HQ: 2)
Level 19-20 (51,000 XP): 4 (HQ: 2)
All at once (203,100 XP needed): 16 (HQ: 8)
Straight from 15-25 (561,200 XP): 43 (HQ: 22)

Cover Girl (Limsa Lominsa) - 8114 XP (HQ: 16228 XP
Requires: 1 Decorated Bronze Barbut
Completions to level: Level 15-16 (30,500 XP): 4 (HQ: 2)
Level 16-17 (35,400 XP): 5 (HQ: 3)
Level 17-18 (40,500 XP): 5 (HQ: 3)
Level 18-19 (45,700 XP): 6 (HQ: 3)
Level 19-20 (51,000 XP): 7 (HQ: 4)
All at once (203,100 XP needed): 26 (HQ: 13)
Straight from 15-25 (561,200 XP): 70 (HQ: 35)

Fashion Week (Limsa Lominsa) - 12218 XP (HQ: 24436 XP)
Requires: 1 Iron Cuirass
Completions to level: Level 15-16 (30,500 XP): 3 (HQ: 2)
Level 16-17 (35,400 XP): 3 (HQ: 2)
Level 17-18 (40,500 XP): 4 (HQ: 2)
Level 18-19 (45,700 XP): 4 (HQ: 2)
Level 19-20 (51,000 XP): 5 (HQ: 3)
All at once (203,100 XP needed): 17 (HQ: 9)
Straight from 15-25 (561,200 XP): 46 (HQ: 23)

Still Crazy After All These Years (Aleport) - 13146 XP (HQ: 26292 XP)
Requires: 1 Initiate's Alembic
Completions to level: Level 15-16 (30,500 XP): 3 (HQ: 2)
Level 16-17 (35,400 XP): 3 (HQ: 2)
Level 17-18 (40,500 XP): 4 (HQ: 2)
Level 18-19 (45,700 XP): 4 (HQ: 2)
Level 19-20 (51,000 XP): 4 (HQ: 2)
All at once (203,100 XP needed): 16 (HQ: 8)
Straight from 15-25 (561,200 XP): 43 (HQ: 22)

A Well-rounded Crew (Western La Noscea) - 8454 XP (HQ: 16908 XP)
Requires: 1 Iron Hoplon
Completions to level: Level 15-16 (30,500 XP): 4 (HQ: 2)
Level 16-17 (35,400 XP): 5 (HQ: 3)
Level 17-18 (40,500 XP): 5 (HQ: 3)
Level 18-19 (45,700 XP): 6 (HQ: 3)
Level 19-20 (51,000 XP): 7 (HQ: 4)
All at once (203,100 XP needed): 25 (HQ: 13)
Straight from 15-25 (561,200 XP): 67 (HQ: 34)

A Firm Hand (Western La Noscea) - 12218 XP (HQ: 24436 XP)
Requires: 1 Iron Gauntlets
Completions to level: Level 15-16 (30,500 XP): 3 (HQ: 2)
Level 16-17 (35,400 XP): 3 (HQ: 2)
Level 17-18 (40,500 XP): 4 (HQ: 2)
Level 18-19 (45,700 XP): 4 (HQ: 2)
Level 19-20 (51,000 XP): 5 (HQ: 3)
All at once (203,100 XP needed): 17 (HQ: 9)
Straight from 15-25 (561,200 XP): 46 (HQ: 23)
Level 20 leves

Get Me the Hard Stuff (Limsa Lominsa) - 21993* XP (HQ: 43986* XP)
Requires: 3 Ironclad Bronze Buckler (9 total)
Completions to level: Level 20-21 (56,600 XP): 3 (HQ: 2)
Level 21-22 (63,900 XP): 3 (HQ: 2)
Level 22-23 (71,400 XP): 4 (HQ: 2)
Level 23-24 (79,100 XP): 4 (HQ: 2)
Level 24-25 (87,100 XP): 4 (HQ: 2)
All at once (358,100 XP needed): 17 (HQ: 9)
Straight from 20-30 (984,000 XP): 45 (HQ: 23)

246 Kinds of Cheese (Limsa Lominsa) - 20578 XP (HQ: 41156 XP)
Requires: 1 Iron Frypan
Completions to level: Level 20-21 (56,600 XP): 3 (HQ: 2)
Level 21-22 (63,900 XP): 4 (HQ: 2)
Level 22-23 (71,400 XP): 4 (HQ: 2)
Level 23-24 (79,100 XP): 4 (HQ: 2)
Level 24-25 (87,100 XP): 5 (HQ: 3)
All at once (358,100 XP needed): 18 (HQ: 9)
Straight from 20-30 (984,000 XP): 48 (HQ: 24)

Night Squawker (Limsa Lominsa) - 12746 XP (HQ: 25492 XP)
Requires: 1 Iron Lantern Shield
Completions to level: Level 20-21 (56,600 XP): 5 (HQ: 3)
Level 21-22 (63,900 XP): 6 (HQ: 3)
Level 22-23 (71,400 XP): 6 (HQ: 3)
Level 23-24 (79,100 XP): 7 (HQ: 4)
Level 24-25 (87,100 XP): 7 (HQ: 4)
All at once (358,100 XP needed): 29 (HQ: 15)
Straight from 20-30 (984,000 XP): 78 (HQ: 39)

Teenage Wailer (Quarrymill) - 13718 XP (HQ: 41154 XP)
Requires: 1 Iron Alembic
Completions to level: Level 20-21 (56,600 XP): 5 (HQ: 2)
Level 21-22 (63,900 XP): 5 (HQ: 2)
Level 22-23 (71,400 XP): 6 (HQ: 2)
Level 23-24 (79,100 XP): 6 (HQ: 2)
Level 24-25 (87,100 XP): 7 (HQ: 3)
All at once (358,100 XP needed): 27 (HQ: 14)
Straight from 20-30 (984,000 XP): 72 (HQ: 24)

No Hand-Me-Downs (Quarrymill) - 12746 XP (HQ: 25492 XP)
Requires: 1 Iron Vambraces
Completions to level: Level 20-21 (56,600 XP): 5 (HQ: 3)
Level 21-22 (63,900 XP): 6 (HQ: 3)
Level 22-23 (71,400 XP): 6 (HQ: 3)
Level 23-24 (79,100 XP): 7 (HQ: 4)
Level 24-25 (87,100 XP): 7 (HQ: 4)
All at once (358,100 XP needed): 29 (HQ: 15)
Straight from 20-30 (984,000 XP): 78 (HQ: 39)

Not Enough Headroom (Quarrymill) - 21993* XP (HQ: 43986* XP)
Requires: 3 Iron Celata (9 total)
Completions to level: Level 20-21 (56,600 XP): 3 (HQ: 2)
Level 21-22 (63,900 XP): 3 (HQ: 2)
Level 22-23 (71,400 XP): 4 (HQ: 2)
Level 23-24 (79,100 XP): 4 (HQ: 2)
Level 24-25 (87,100 XP): 4 (HQ: 2)
All at once (358,100 XP needed): 17 (HQ: 9)
Straight from 20-30 (984,000 XP): 45 (HQ: 23)
Level 25 leves

A Leg to Stand On (Limsa Lominsa) - 27786 XP (HQ: 55572 XP)
Requires: 1 Heavy Iron Flanchard
Completions to level: Level 25-26 (95,200 XP): 4 (HQ: 2)
Level 26-27 (109,800 XP): 4 (HQ: 2)
Level 27-28 (124,800 XP): 5 (HQ: 3)
Level 28-29 (140,200 XP): 6 (HQ: 3)
Level 29-30 (155,900 XP): 6 (HQ: 3)
All at once (625,900 XP needed): 23 (HQ: 12)
Straight from 25-35 (1,575,300 XP): 57 (HQ: 29)

Tisket Tasset (Limsa Lominsa) - 39720* XP (HQ: 79440* XP)
Requires: 3 Steel Tassets (9 total)
Completions to level: Level 25-26 (95,200 XP): 3 (HQ: 2)
Level 26-27 (109,800 XP): 3 (HQ: 2)
Level 27-28 (124,800 XP): 4 (HQ: 2)
Level 28-29 (140,200 XP): 4 (HQ: 2)
Level 29-30 (155,900 XP): 4 (HQ: 2)
All at once (625,900 XP needed): 16 (HQ: 8)
Straight from 25-35 (1,575,300 XP): 40 (HQ: 20)

Ingot We Trust (Limsa Lominsa) - 19770 XP (HQ: 39540 XP)
Requires: 1 Steel Ingot
Completions to level: Level 25-26 (95,200 XP): 5 (HQ: 3)
Level 26-27 (109,800 XP): 6 (HQ: 3)
Level 27-28 (124,800 XP): 7 (HQ: 4)
Level 28-29 (140,200 XP): 8 (HQ: 4)
Level 29-30 (155,900 XP): 8 (HQ: 4)
All at once (625,900 XP needed): 32 (HQ: 16)
Straight from 25-35 (1,575,300 XP): 80 (HQ: 40)

Get Shirty (Quarrymill) - 39720* XP (HQ: 79440* XP)
Requires: 3 Steel Chainmail (9 total)
Completions to level: Level 25-26 (95,200 XP): 3 (HQ: 2)
Level 26-27 (109,800 XP): 3 (HQ: 2)
Level 27-28 (124,800 XP): 4 (HQ: 2)
Level 28-29 (140,200 XP): 4 (HQ: 2)
Level 29-30 (155,900 XP): 4 (HQ: 2)
All at once (625,900 XP needed): 16 (HQ: 8)
Straight from 25-35 (1,575,300 XP): 40 (HQ: 20)

Hot for Teacher (Quarrymill) - 18524 XP (HQ: 37048 XP)
Requires: 1 Heavy Iron Armor
Completions to level: Level 25-26 (95,200 XP): 6 (HQ: 3)
Level 26-27 (109,800 XP): 6 (HQ: 3)
Level 27-28 (124,800 XP): 7 (HQ: 4)
Level 28-29 (140,200 XP): 8 (HQ: 4)
Level 29-30 (155,900 XP): 9 (HQ: 5)
All at once (625,900 XP needed): 32 (HQ: 16)
Straight from 25-35 (1,575,300 XP): 86 (HQ: 43)

Need for Mead (Quarrymill) - 19770 XP (HQ: 39540 XP)
Requires: 1 Conical Alembic
Completions to level: Level 25-26 (95,200 XP): 5 (HQ: 3)
Level 26-27 (109,800 XP): 6 (HQ: 3)
Level 27-28 (124,800 XP): 7 (HQ: 4)
Level 28-29 (140,200 XP): 8 (HQ: 4)
Level 29-30 (155,900 XP): 8 (HQ: 4)
All at once (625,900 XP needed): 32 (HQ: 16)
Straight from 25-35 (1,575,300 XP): 80 (HQ: 40)
Level 30 leves

Auroch Star (Limsa Lominsa) - 30282 XP (HQ: 60564 XP)
Requires: 1 Bull Hoplon
Completions to level: Level 30-31 (162,500 XP): 6 (HQ: 3)
Level 31-32 (175,900 XP): 6 (HQ: 3)
Level 32-33 (189,600 XP): 7 (HQ: 4)
Level 33-34 (203,500 XP): 7 (HQ: 4)
Level 34-35 (217,900 XP): 8 (HQ: 4)
All at once (949,400 XP needed): 32 (HQ: 16)
Straight from 30-40 (2,290,520 XP): 76 (HQ: 38)

Romper Stomper (Limsa Lominsa) - 53010* XP (HQ: 106020* XP)
Requires: 3 Steel-plated Jackboots (9 total)
Completions to level: Level 30-31 (162,500 XP): 4 (HQ: 2)
Level 31-32 (175,900 XP): 4 (HQ: 2)
Level 32-33 (189,600 XP): 4 (HQ: 2)
Level 33-34 (203,500 XP): 4 (HQ: 2)
Level 34-35 (217,900 XP): 5 (HQ: 3)
All at once (949,400 XP needed): 18 (HQ: 9)
Straight from 30-40 (2,290,520 XP): 44 (HQ: 22)

Eyes on a Hard Body (Limsa Lominsa) - 47824 XP (HQ: 95648 XP)
Requires: 1 Decorated Buckler
Completions to level: Level 30-31 (162,500 XP): 4 (HQ: 2)
Level 31-32 (175,900 XP): 4 (HQ: 2)
Level 32-33 (189,600 XP): 4 (HQ: 2)
Level 33-34 (203,500 XP): 5 (HQ: 3)
Level 34-35 (217,900 XP): 5 (HQ: 3)
All at once (949,400 XP needed): 20 (HQ: 10)
Straight from 30-40 (2,290,520 XP): 48 (HQ: 24)

Kitty Get Your Helm (Costa del Sol) - 30282 XP (HQ: 60564 XP)
Requires: 1 Steel Elmo
Completions to level: Level 30-31 (162,500 XP): 6 (HQ: 3)
Level 31-32 (175,900 XP): 6 (HQ: 3)
Level 32-33 (189,600 XP): 7 (HQ: 4)
Level 33-34 (203,500 XP): 7 (HQ: 4)
Level 34-35 (217,900 XP): 8 (HQ: 4)
All at once (949,400 XP needed): 32 (HQ: 16)
Straight from 30-40 (2,290,520 XP): 76 (HQ: 38)

Skillet Scandal (Costa del Sol) - 31882 XP (HQ: 63764 XP)
Requires: 1 White Skillet
Completions to level: Level 30-31 (162,500 XP): 6 (HQ: 3)
Level 31-32 (175,900 XP): 6 (HQ: 3)
Level 32-33 (189,600 XP): 6 (HQ: 3)
Level 33-34 (203,500 XP): 7 (HQ: 4)
Level 34-35 (217,900 XP): 7 (HQ: 4)
All at once (949,400 XP needed): 30 (HQ: 15)
Straight from 30-40 (2,290,520 XP): 72 (HQ: 36)

They've Got Legs (Costa del Sol) - 53010* XP (HQ: 106020* XP)
Requires: 3 Steel Sabatons (9 total)
Completions to level: Level 30-31 (162,500 XP): 4 (HQ: 2)
Level 31-32 (175,900 XP): 4 (HQ: 2)
Level 32-33 (189,600 XP): 4 (HQ: 2)
Level 33-34 (203,500 XP): 4 (HQ: 2)
Level 34-35 (217,900 XP): 5 (HQ: 3)
All at once (949,400 XP needed): 18 (HQ: 9)
Straight from 30-40 (2,290,520 XP): 44 (HQ: 22)
Level 35 leves

Very Slow Array (Limsa Lominsa) - 64792 XP (HQ: 129584 XP)
Requires: 1 Mythril Plate
Completions to level: Level 35-36 (232,320 XP): 4 (HQ: 2)
Level 36-37 (249,900 XP): 4 (HQ: 2)
Level 37-38 (267,800 XP): 5 (HQ: 3)
Level 38-39 (286,200 XP): 5 (HQ: 3)
Level 39-40 (304,900 XP): 5 (HQ: 3)
All at once (1,341,120 XP needed): 21 (HQ: 11)
Straight from 35-45 (3,126,620): 49 (HQ: 25)

Get Me the Usual (Limsa Lominsa) - 71820* XP (HQ: 143640* XP)
Requires: 3 Heavy Steel Flanchard (9 total)
Completions to level: Level 35-36 (232,320 XP): 4 (HQ: 2)
Level 36-37 (249,900 XP): 4 (HQ: 2)
Level 37-38 (267,800 XP): 4 (HQ: 2)
Level 38-39 (286,200 XP): 4 (HQ: 2)
Level 39-40 (304,900 XP): 5 (HQ: 3)
All at once (1,341,120 XP needed): 19 (HQ: 10)
Straight from 35-45 (3,126,620): 44 (HQ: 22)

Hollow Hallmarks (Limsa Lominsa) - 43194 XP (HQ: 86388 XP)
Requires: 1 Mythril Ingot
Completions to level: Level 35-36 (232,320 XP): 6 (HQ: 3)
Level 36-37 (249,900 XP): 6 (HQ: 3)
Level 37-38 (267,800 XP): 7 (HQ: 4)
Level 38-39 (286,200 XP): 7 (HQ: 4)
Level 39-40 (304,900 XP): 8 (HQ: 4)
All at once (1,341,120 XP needed): 32 (HQ: 16)
Straight from 35-45 (3,126,620): 73 (HQ: 37)

I've Got You Under My Skin (Observatorium) - 71820* XP (HQ: 143640* XP)
Requires: 3 Steel-plated Caligae (9 total)
Completions to level: Level 35-36 (232,320 XP): 4 (HQ: 2)
Level 36-37 (249,900 XP): 4 (HQ: 2)
Level 37-38 (267,800 XP): 4 (HQ: 2)
Level 38-39 (286,200 XP): 4 (HQ: 2)
Level 39-40 (304,900 XP): 5 (HQ: 2)
All at once (1,341,120 XP needed): 19 (HQ: 10)
Straight from 35-45 (3,126,620): 44 (HQ: 15)

War is a Pain in the Back (Observatorium) - 43194 XP (HQ: 86388 XP)
Requires: 1 Mythril Plate Belt
Completions to level: Level 35-36 (232,320 XP): 6 (HQ: 3)
Level 36-37 (249,900 XP): 6 (HQ: 3)
Level 37-38 (267,800 XP): 7 (HQ: 4)
Level 38-39 (286,200 XP): 7 (HQ: 4)
Level 39-40 (304,900 XP): 8 (HQ: 4)
All at once (1,341,120 XP needed): 32 (HQ: 16)
Straight from 35-45 (3,126,620): 73 (HQ: 37)

Skillet to the Stars (Observatorium) - 41034 XP (HQ: 82068 XP)
Requires: 1 Steel Frypan
Completions to level: Level 35-36 (232,320 XP): 6 (HQ: 3)
Level 36-37 (249,900 XP): 7 (HQ: 4)
Level 37-38 (267,800 XP): 7 (HQ: 4)
Level 38-39 (286,200 XP): 7 (HQ: 4)
Level 39-40 (304,900 XP): 8 (HQ: 4)
All at once (1,341,120 XP needed): 33 (HQ: 17)
Straight from 35-45 (3,126,620): 77 (HQ: 39)
Level 40 leves

Everybody Cut Footloose (Limsa Lominsa) - 54214 XP (HQ: 108428 XP)
Requires: 1 Mythril-plated Jackboots
Completions to level: Level 40-41 (324,000 XP): 6 (HQ: 3)
Level 41-42 (340,200 XP): 7 (HQ: 4)
Level 42-43 (356,800 XP): 7 (HQ: 4)
Level 43-44 (373,700 XP): 7 (HQ: 4)
Level 44-45 (390,800 XP): 8 (HQ: 4)
All at once (1,785,500 XP needed): 33 (HQ: 17)
Straight from 40-50 (4,125,800): 77 (HQ: 39)

Distill and Know that I'm Right (Limsa Lominsa) - 96147* XP (HQ: 192294* XP)
Requires: 3 Mythril Alembics (9 total)
Completions to level: Level 40-41 (324,000 XP): 4 (HQ: 2)
Level 41-42 (340,200 XP): 4 (HQ: 2)
Level 42-43 (356,800 XP): 4 (HQ: 2)
Level 43-44 (373,700 XP): 4 (HQ: 2)
Level 44-45 (390,800 XP): 5 (HQ: 3)
All at once (1,785,500 XP needed): 19 (HQ: 10)
Straight from 40-50 (4,125,800): 43 (HQ: 22)

Liquid Persuasion (Limsa Lominsa) - 83662 XP (HQ: 167324 XP)
Requires: 1 Mythril Chain Coif
Completions to level: Level 40-41 (324,000 XP): 4 (HQ: 3)
Level 41-42 (340,200 XP): 5 (HQ: 3)
Level 42-43 (356,800 XP): 5 (HQ: 3)
Level 43-44 (373,700 XP): 5 (HQ: 3)
Level 44-45 (390,800 XP): 5 (HQ: 4)
All at once (1,785,500 XP needed): 22 (HQ: 11)
Straight from 40-50 (4,125,800): 50 (HQ: 25)

Employee Retention (Whitebrim) - 96147* XP (HQ: 192294* XP)
Requires: 3 Mythril Elmo (9 total)
Completions to level: Level 40-41 (324,000 XP): 4 (HQ: 2)
Level 41-42 (340,200 XP): 4 (HQ: 2)
Level 42-43 (356,800 XP): 4 (HQ: 2)
Level 43-44 (373,700 XP): 4 (HQ: 2)
Level 44-45 (390,800 XP): 5 (HQ: 3)
All at once (1,785,500 XP needed): 19 (HQ: 10)
Straight from 40-50 (4,125,800): 43 (HQ: 22)

Metal Fatigue (Whitebrim) - 55774 XP (HQ: 111548 XP)
Requires: 1 Mythril Vambraces
Completions to level: Level 40-41 (324,000 XP): 6 (HQ: 3)
Level 41-42 (340,200 XP): 7 (HQ: 4)
Level 42-43 (356,800 XP): 7 (HQ: 4)
Level 43-44 (373,700 XP): 7 (HQ: 4)
Level 44-45 (390,800 XP): 8 (HQ: 4)
All at once (1,785,500 XP needed): 33 (HQ: 17)
Straight from 40-50 (4,125,800): 74 (HQ: 37)

Family Secrets (Whitebrim) - 54214 XP (HQ: 108428 XP)
Requires: 1 Mythril Barbut
Completions to level: Level 40-41 (324,000 XP): 6 (HQ: 3)
Level 41-42 (340,200 XP): 7 (HQ: 4)
Level 42-43 (356,800 XP): 7 (HQ: 4)
Level 43-44 (373,700 XP): 7 (HQ: 4)
Level 44-45 (390,800 XP): 8 (HQ: 4)
All at once (1,785,500 XP needed): 33 (HQ: 17)
Straight from 40-50 (4,125,800): 77 (HQ: 39)
Level 45 leves

Some Dragoons Have All the Luck (Limsa Lominsa) - 117261* XP (HQ: 234522* XP)
Requires: 3 High Mythril Armor (9 total)
Completions to level: Level 45-46 (408,200 XP): 4 (HQ: 2)
Level 46-47 (437,600 XP): 4 (HQ: 2)
Level 47-48 (467,500 XP): 5 (HQ: 2)
Level 48-49 (498,000 XP): 5 (HQ: 3)
Level 49-50 (529,000 XP): 5 (HQ: 3)
All at once (2,340,300 XP needed): 20 (HQ: 10)

Cobalt Aforethought (Limsa Lominsa) - 56534 XP (HQ: 113068 XP)
Requires: 1 Cobalt Plate
Completions to level: Level 45-46 (408,200 XP): 8 (HQ: 4)
Level 46-47 (437,600 XP): 8 (HQ: 4)
Level 47-48 (467,500 XP): 9 (HQ: 5)
Level 48-49 (498,000 XP): 9 (HQ: 5)
Level 49-50 (529,000 XP): 10 (HQ: 5)
All at once (2,340,300 XP needed): 42 (HQ: 21)

Feasting the Night Away (Limsa Lominsa) - 106560 XP (HQ: 213120 XP)
Requires: 1 Hells' Kitchen
Completions to level: Level 45-46 (408,200 XP): 4 (HQ: 2)
Level 46-47 (437,600 XP): 5 (HQ: 3)
Level 47-48 (467,500 XP): 5 (HQ: 3)
Level 48-49 (498,000 XP): 5 (HQ: 3)
Level 49-50 (529,000 XP): 5 (HQ: 3)
All at once (2,340,300 XP needed): 22 (HQ: 11)

Booty Call (St. Coinach's Find) - 67146 XP (HQ: 134292 XP)
Requires: 1 Cobalt-played Jackboots
Completions to level: Level 45-46 (408,200 XP): 7 (HQ: 4)
Level 46-47 (437,600 XP): 7 (HQ: 4)
Level 47-48 (467,500 XP): 7 (HQ: 4)
Level 48-49 (498,000 XP): 8 (HQ: 4)
Level 49-50 (529,000 XP): 8 (HQ: 4)
All at once (2,340,300 XP needed): 35 (HQ: 18)

Parasitic Win (St. Coinach's Find) - 71040 XP (HQ: 142080 XP)
Requires: 1 Cobalt-plated Caligae
Completions to level: Level 45-46 (408,200 XP): 6 (HQ: 3)
Level 46-47 (437,600 XP): 7 (HQ: 4)
Level 47-48 (467,500 XP): 7 (HQ: 4)
Level 48-49 (498,000 XP): 8 (HQ: 4)
Level 49-50 (529,000 XP): 8 (HQ: 4)
All at once (2,340,300 XP needed): 33 (HQ: 17)

Dealing with the Tough Stuff (St. Coinach's Find) - 100395* XP (HQ: 200790* XP)
Requires: 3 Cobalt Ingot (9 total)
Completions to level: Level 45-46 (408,200 XP): 5 (HQ: 3)
Level 46-47 (437,600 XP): 5 (HQ: 3)
Level 47-48 (467,500 XP): 5 (HQ: 3)
Level 48-49 (498,000 XP): 5 (HQ: 3)
Level 49-50 (529,000 XP): 6 (HQ: 3)
All at once (2,340,300 XP needed): 24 (HQ: 12)

The listed experience amounts are the bare minimum. Multiple high quality turn-ins will result in much more XP.
Level 20

Limsa Lominsa - Get Me the Hard Stuff (7331 XP)
Requires: 3 Ironclad Bronze Buckler
Ironclad Bronze Buckler components:
1 Ice Shard
1 Earth Shard
1 Bronze Buckler
1 Bronze Ingot
1 Iron Rivet

Quarrymill - Not Enough Headroom (7331 XP)
Requires: 3 Iron Celata
Iron Celata components:
1 Ice Shard
1 Earth Shard
2 Iron Plate
1 Iron Rings
Level 25

Limsa Lominsa - Tisket Tasset (13240 XP)
Requires 3 Steel Tassets
Steel Tassets components:
3 Ice Shard
2 Earth Shard
1 Steel Plate
2 Aldgoat Leather

Quarrymill - Get Shirty (13240 XP)
Requires: 3 Steel Chainmail
Steel Chainmail components:
3 Ice Shard
2 Earth Shard
1 Steel Rings
3 Undyed Velveteen
Level 30

Limsa Lominsa - Romper Stomper (17670 XP)
Requires: 3 Steel-plated Jackboots
Steel-plated Jackboots components:
3 Ice Shard
3 Earth Shard
1 Steel Plate
1 Aldgoat Leather
1 Diremite Sinew

Costa del Sol - They've Got Legs (17670 XP)
Requires: 3 Steel Sabatons
Steel Sabatons components:
3 Ice Shard
3 Earth Shard
1 Brass Ingot
1 Steel Plate
2 Steel Rings
1 Toad Leather
Level 35

Limsa Lominsa - Get Me the Usual (23940 XP)
Requires: 3 Heavy Steel Flanchard
Heavy Steel Flanchard components:
4 Ice Shard
3 Earth Shard
1 Steel Ingot
3 Steel Rings
2 Boar Leather

Coerthas (Observatorium) - I've Got You Under My Skin (23940 XP)
Requires: 3 Steel-plated Caligae
Steel-plated Caligae components:
4 Ice Shard
3 Earth Shard
1 Steel Plate
1 Steel Rivets
1 Boar Leather
1 Animal Sinew
Level 40

Limsa Lominsa - Distill and Know that I'm Right (32049 XP)
Requires: 3 Mythril Alembic
Mythril Alembic components:
5 Ice Shard
4 Earth Shard
1 Steel Ingot
1 Mythril Plate
1 Mythril Rivets
1 Eye of Earth

Coerthas - Employee Retention (32049 XP)
Requires: 3 Mythril Elmo
Mythril Elmo components:
5 Ice Shard
4 Earth Shard
1 Mythril Plate
2 Mythril Rivets
1 Boar Leather
Level 45

Limsa Lominsa - Some Dragoons Have All the Luck (39087 XP)
Requires: 3 High Mythril Armor
High Mythril Armor components:
5 Ice Shard
5 Earth Shard
4 Electrum Ingot
1 Mythril Plate

Mor Dhona - Dealing with the Tough Stuff (33573 XP)
Requires: 3 Cobalt Ingot
Cobalt Ingot components:
5 Ice Shard
1 Cobalt Ore
2 Iron Ore