I will put scores on a ten-point scale (10 is hardest) based on my intuitive perception:
Animals 7/10
Artistic 3/10
Construction 5/10
Cooking 6/10
Crafting 4/10
Growing 7/10
Medicine 8/10
Melee 10/10
Mining 6/10
Intellectual 2/10
Shooting 9/10
Social 8/10
P.S.: I see problem with some skill learnyng not in the way that they grow, but in the lack of ways to practice them enough. It is the exact problem for melee, medicine and (somewhat) shooting. There must be some additional jobs (like random non-combat injuries for doctors to practice) or training/joy things (like punching bags or shooting range).
Animals 7/10
Artistic 3/10
Construction 5/10
Cooking 6/10
Crafting 4/10
Growing 7/10
Medicine 8/10
Melee 10/10
Mining 6/10
Intellectual 2/10
Shooting 9/10
Social 8/10
P.S.: I see problem with some skill learnyng not in the way that they grow, but in the lack of ways to practice them enough. It is the exact problem for melee, medicine and (somewhat) shooting. There must be some additional jobs (like random non-combat injuries for doctors to practice) or training/joy things (like punching bags or shooting range).