I observed the birds from quality breeders verses hatcheries tend to be more friendly. Barred rocks probably so so and Black Copper Marans are pretty friendly if u raise them from hand from young, even if they are not friendly when you get them; they still warm up to you if you start handling them and feeding them treats. Orpington seem to be pretty friendly if you handle them.
Ask@ChuskaMtns as she has exotic, white etc orpington birds. They are dual purpose bird (meat & eggs)and a much bigger bird than any production/hatchery breed. Her orpingtons are way bigger than hatchery Australorps and really anything else. You must keep them cool in the summer. Cool wet ground, pools, fans etc as you would any other bird.
I have heard Easter Eggers do well with heat but they are production birds, are not very friendly and lay green eggs. Or of 5 I lay one to the heart this summer. I don't expect them to lay as long since they are production/hatchery birds.
I have some Amerucanas(blue) who if handled are pretty friendly and lay a blue egg. Desertmarcy in Tucson sells chick's and pullets from time to time.
I have enjoyed my one leghorn, who can be friendly, but this breed is particularly flighty. So it depends if you handle them or not. They are good daily layer of white eggs.
I would always get at least one or two silkies for a family as they are very friendly, but their eggs are very small and they tend to go broody and try to sit on eggs or ceramicor wooden trying to hatch them. Super sweet birds! Even the roos are sweet! I do not have any as of yet.