Mutt, Easter Egger, and Orpington cross/mutt.
The first one is not a Rock, as Partridge Rocks have different coloration, even hatchery types. The last one may be a hatchery Orpington but honestly I think it's a cross with that much leakage in the neck. And white legs are dominant, making an F1 outcross quite similar. Plus the comb appears to be a modified rose or pea comb?