Ill start off:

level 3 garrison

Small:
Level 3 Forge
Level 3 JC Building
Level 3 Slavage Yard

Medium:
Level 2 Gladiator's Sanctum
Level 2 Barn

Large:
Level 2 Barracks
Level 2 War Mill

Other:
Level 2 Fish building
Level 3 Mines
Level 1 Pet thing (i dont do the pet battles)

My least favorite building is the Warmill, i might change it out for something else.
Also Debating on how much i like the barn

I don't know why you don't like the Warmill. If you raid you get a free seal of tempered fate every week at level 3. It gives you some pretty cool transmog gear. And work orders give you good follower gear.

Mine-
Small:
Level 2 Forge
Level 2 Salvage Yard
Level 2 Engineering Works

Medium:
Level 2 Tavern
Level 2 Lumber Mill (Once I have a good stockpile of resources I'm getting a Barn instead here)

Large:
Level 2 War Mill
Level 1 Barracks(Still not sure if I want to keep barracks)

Racks, stable switched to warmill.

Trade post, inn switched to glad.

Forge, chant, salvage.

my logout button

stables lvl2, engineering lvl2, gladiators sanctum lvl2.

lawl

small
level 3 enchanting
level 3 gem
level 2 alchemy

medium
level 3 tavern
level 3 lumber mill

large
level 3 barracks
level 2 stables

others

level 3 mines
level 2 herb
level 3 fishing
level 2 menagerie

should be all level 3 by next week

lvl 3 enchanting
lvl 3 jewelcrafting
lvl 3 salvage yard

lvl 3 gladiators sanctum
lvl 3 barracks
lvl 3 trading post
lvl 3 war mill

lvl 3 fishing shack
lvl 3 mine
lvl 3 herb garden
lvl 2 pet menagerie (like 20 wins from lvl 3)