1 looks like it could be a roo, but may be a hen, (and one of the fanciest chicks I've ever seen btw with those beautiful leg feathers). 2 looks to be a hen for sure. 3 looks like a rooster, but a pic of the front focused on the comb would be helpful to be sure. 4 looks like a roo, more certain than 1, less certain than 3. You've probably got at least 2 roos, maybe 3, and one pullet for sure.