Literally everything except AF. There is no reason for things to be locked anymore. 'Muh immurzion' was broken the moment they started adding pig suits and bikinis. They even have heavy-ish armour looks for healers and casters now thanks to Swallow's Compass + Rathalos Coat.
I am tired of getting rows and rows of robes and dresses if I play caster or healer. Caster and healer choices suck hard. Probably the worst out of the whole game.

But, I suppose if we have to make a list of actual items...

Sky Pirate's Jacket of Striking
Augmented Shire Conservator's Coat
Augmented Shire Pankratiast's Jacket
Augmented Shire Philosopher's Coat
Shire Pankratiast's Gloves
Skallic Jacket of Aiming
Midan Coat of Fending
Coat of the Lost Thief / Ghost Thief / Red Thief
Plague Bringer's / Doctor's Coat

(Post saved for when I come home and can open the game.)