3 of our SF's were very skittish and then our other one was friendly (would come over and stand on our front porch looking for treats and snuggles). And our SF mix was also pretty skittish. This is just my experience with the breed. They are also super talkative. Our SF x Cochin rooster was really gentle with the hens and never picked a fight. Also not really people friendly and screamed when we held him. (All of these birds have passed by the way. They don't seem to be very hardy. The rooster we think ate some kind of poisonous bug or plant, don't know for sure what it was).
Delawares are the bosses and really people friendly, and so are Marans. Of our 3 Marans, 2 have gone broody but not aggressive broody. Kind of a quiet broody? So far we've only had each of the two go broody once. Our 2 Delaware's are lead hens (as with our BCM). Also just my experience with the breed
Bantam cochins are sassy. I've figured this from experience and hearing other peoples experiences. But the roos are wimps
Barred rocks are friendly, but do not like to be touched (my experience)
Frizzles of any breed are kinda...weird (my experience)
Silkies are crazy broodies and roosters can be mean (our silkie roo was mean for his first year of life, but then gradually got friendlier and is nicer now)
LF Cochins are very chill but do not like to be handled. We had two and they led our flock but when one passed the other was kicked down to almost the bottom of the pecking order and is kind of cowardly. Hens scream bloody murder when I try to touch them. Mean broodies (my experience)
Green Queens are extremely friendly (my experience)
Buff Orps are leaders, mean broodies, and kind of dumb (last one is my experience because our BO hen drowned herself in our sheep's water trough even though she had lived with us for all 3 years of her life and that trough was never moved)
RIR's are friendly. I have a cockerel who is around 6 months old and he is so friendly. He sits on my lap and loves to be petted. He even falls asleep. He is a leader though, and took over our second flock the first day he was put in there. He has a truce with the old leader of the flock but he doesn't like our other rooster is the lowest in the pecking order