I definitely agree with the Leghorns. They're not my thing. My 1st loves were my curious & playful Easter Eggers. Each one has such a unique personality. Then I found Orpingtons - my beautiful lap chickens. They are so easy to train because of their love for food, but the amount of feed consumed does not equal more eggs. They would never even think about hopping the fence. The Bieles are big & docile like the orps, but they don't seem to be at the very bottom. They also reached maturity a lot faster & seem to give more eggs. So far I like them, but when I lost my Biele boy, I decided to sell all but one biele pullet. If she's still a fav in the spring, then I'd like to try hatching them again in 2016. I suppose I have all docile breeds.
I have 2 bantams, but because they are so fast (& the big hens are so slow) I haven't seen much bullying. In fact, the bantams sleep ABOVE the highest hens in the summer. (They're the only ones that can fit in the window sil & hog all the cool summer night breezes.) In the winter, they roost under a big fat orp to stay warm. The bantams were hatched & raised with full sized breeds, so they don't seem to know they're smaller. They have big attitudes to make up for it. Perhaps they are the bullies.
That is a cute story. What are your bantams? Mine are Silkies so perch roosting is not their thing. They pile in nestboxes for their evening roost. My flock has been built around the Silkies - if a breed doesn't play nice with the Silkies they're re-homed. My DH loves his Silkies and can't imagine the backyard without them and so far only a Blue Wheaten Ameraucana and a Blue Breda has made the cut.