They're not Cornish cross in any possible way. A CX would be close to butchering weight by now, would be waddling, would have bare places where there were no feathers... no fear, these are NOT Cornish X.
Chick #2 is a boy. I think they are all white Leghorns. Remember, even when you buy sexed pullets, up to 10 chicks out of every 100 may be boys. You were just one of the "lucky" ones. I was too, this year. One of my Australorps was a male, even though he came from a sexed pullet bin.