Aight, i'd usually just review a single clothe, but it seems you went a bit... overkill with this.
Uh, starting off, yes, skins count as clothing, someone already made a skin so i decided to inclue them too. Though, i do feel like there's a bit... too many ultrakill clothes right now.
The propeller hat is really cool, but there's already another one in production, so that could be an issue.
I don't have anything special to say about the c00lkid team shirt, probably its too simple/would have issues fitting with the other clothes.
The macrobacteria pet looks like a really cool idea tho! I like pets that are the enemies from the game lol