All hens!
first photo--silver laced Wyandotte- light brown eggs. Easter egger pullet, looks to have a good pea comb so blue or green eggs.
second photo--black sex link. medium color brown eggs, should lay nice large eggs once she gets going.
third photo--red sex link. again, medium brown eggs and they should be very large once she hits her stride.
fourth photo--I'm not sure, she doesn't look like any purebred to me. If she's from a hatchery my best guess would be an atypical Easter egger that will probably lay cream or pinkish eggs, she has a straight comb so that cuts down (but not eliminates completely) the chances of blue or green eggs. If she's not from a hatchery, I'm going to say barnyard mix, and some shade of brown or maybe cream eggs.
They're a nice looking flock. I love having different breeds and colors. My chickens double as eye candy!