If you have a bantam, you would know as it would be less than half the size of your other birds. I don't see that here.
EE cockeral
That second bird--does look like a black sex link but does she have fluffy feathers or a crest on the back of her head? I think it's just the pic but she makes me think of a silkie mix. If no crest or feathers on her legs, I'll agree black sex link.
White rock or leghorn. Hard for me to tell at this age cause they're all lankier. If she gets heavier bodied, it's a rock. Red earlobes mean rock, white mean leghorn.
EE or mixed pullet.