Right now, one adult and several 3 month olds. I haven't bothered to count pullets and cockerels in that batch yet. Probably 7 or 8 cockerels there. At times, I have had two and three that were raised together and got along great. I have had a mature rooster and two pretty much mature ones that got along OK, but they did keep their distance. The worst ratio I had was 3 roosters with 15 hens and pullets, but a more normal ratio of adults for me is 1 rooster with 7 hens. The only time I had barebacked hens was 1 rooster with 8 hens. I ate the rooster and the barebacked hens when I raised replacements and have not had a problem like that since.
I have had one mature rooster with eight of his sons going through adolescence. At least it was eight before I started eating them. They drove their daddy batty. A young one would chase the adult hens and they would run to the old rooster for protection. They did not usually bother the hens in his immediate area but they were fair game if they roamed very far.
One time, a young rooster was chasing a hen, the older rooster saw what was happening and went over, and the young one just kept running on by the hen. The old rooster started to strut, showing off to the world how mean and bad he was. Meanwhile, the younger rooster kept running into one side of a shed, out the other, circled around, and nabbed the hen without slowing down. The old rooster was still strutting.