I say Rhode Island Reds. I just hatched a batch from our flock and they look exactly like yours. They will be red all over when they grow up. You can vent sex them when they are a day old, if you know how to....I don't!
We got ours from a hatchery and have been very pleased with them. Very...
Good luck. I flock just became mature around Christmas and the main roo picked his five favorite girls and tore them up. Now that all the girls are laying he seems to be better. I hate the way the girls look and hope it will be better after they molt. Maybe it's a new roo thing?