The one with the small comb is a Whiting True Blue, who lay blue eggs and are excellent egg producers.
The one with the big comb is his son. He is a cross of a Whiting True Blue and a Black Copper Marans, so he carries a blue egg gene and a brown egg gene. So he's F1 olive egger.
Neither are especially friendly but they're not people aggressive either. I just have too many roos and need to rehome a few.