Okay so this is my current profession leveling:
Profession | Engineering | Enchanting | Tailoring | Mining | Jewelcrafting | Skinning | Leatherworking | Herbalism | Alchemy | Blacksmithing | Inscription |
Classic | 300/300 | 300/300 | 300/300 | 290/300 | 305/305 | 205/300 | 180/300 | 300/300 | 300/300 | 300/300 | 300/300 |
TBC | 75/75 | 75/75 | 75/75 | 75/75 | 80/80 | 80/80 | 75/75 | 75/75 | 75/75 | 73/75 | 75/75 |
WotLK | 75/75 | 75/75 | 75/75 | 75/75 | 80/80 | 80/80 | 75/75 | 75/75 | 75/75 | 75/75 | 75/75 |
Cata | 75/75 | 75/75 | 75/75 | 75/75 | 80/80 | 80/80 | 75/75 | 75/75 | 75/75 | 75/75 | 75/75 |
MoP | 75/75 | 75/75 | 75/75 | 75/75 | 80/80 | 80/80 | 75/75 | 75/75 | 75/75 | 75/75 | 75/75 |
WoD | 100/100 | 100/100 | 100/100 | 100/100 | 105/105 | 105/105 | 100/100 | 100/100 | 100/100 | 100/100 | 100/100 |
Legion | 100/100 | 70/100 | 96/100 | 100/100 | 91/105 | 105/105 | 86/100 | 100/100 | 86/100 | 80/100 | 100/100 |
BFA | 175/175 | 0/175 | 0/175 | 175/175 | 180/180 | 180/180 | 175/175 | 175/175 | 0/175 | 155/175 | 147/175 |
SL | 100/100 | 101/115 | 100/100 | 150/150 | 105/105 | 155/155 | 100/100 | 150/150 | 175/175 | 100/100 | 100/100 |
Classic: Mining seems to have stopped at 290, there is prob some way to go to 300, but have not really tried yet. Skinning stopped at 205. (Currently leveling Leatherworking which is why it's low)
TBC: All works, some are just painful to level up
WotLK: All works, some are just painful to level up
Cata: All works, some are just painful to level up
MoP: All works, super easy
WoD: All works, you can level by just farming Garrison Resources from the cache and using the Trading Post to buy materials, super chill.
Legion: Most will stop at 80 due to level req on the quests, Tailoring stopped at 90 iirc, Inscription went up to 100 with a rank 3 recipe I bought in DMF. For Herbalism do the last skills in the The Broken Shore. Don't remember Mining, but since I have it maxed you can prob max it somehow.
BFA: Most will stops at 150, due to 150-175 being added in a later patch, so all recipes are in Nazjatar. I think Leatherworking and all gathering professions were different tho.
Shadowlands: Enchanting for SL stops at like 95 or something, depending on how many Epic crystals you managed to get from quest / rare upgrades. Rest were actually fairly easy.