Those that are yellow with the black 'dots' along the back and chest are Italian. It looks like you may have some pure white ones (sometimes called A&M) but it's hard to tell.
I think I see at least 3, maybe more, with Tuxedo marking. Hard to tell if some are the same bird. They are going to be the ones with white markings. In the 1st picture, the full bodied one in the top right corner with the white face and patch on the chest. 2nd picture, the one in the middle with the dark back and white chest. 3rd picture, on the left side near the corner there's one with a white face (possibly the one next to it too). 4th picture, I think it's the same one on the left near the corner and one of the far right with a white face and chest.
I wouldn't worry about differences in feather growth as long as they aren't showing any signs of illness. Some just grow faster than others.