I have only owned 3 breeds, Cochin Bantam, Sebright, and OEGB. In Cochin I have had roos and hens, Sebright hen, and OEGB rooster. Here is how I rank them.
1. Cochin - Sweet roosters and hens. Roosters have been protective but gentle. In my experience frizzle roos of that breed are mean for some reason.
2. Sebright - She has the sweetest personality. Though shy and flighty she has beautiful lacing and disposition.
3. OEGB - He never stops crowing though he has beautiful colors. At 6 months old already has visible spurs. He is kept in a cage so not sure how he would act free ranged but I feel like he would be mean. Could be individual personality though.