I will happily PM you a link to all the info you should need to get a clear picture of what a Buckeye is.
But just to answer part of your query... I had a fellow stop yesterday that I know through 4-H who was looking for some hatching eggs for his niece to do a Science project for school. He was going to be the one who got the chickens after she was done. So, I introduced him to Buckeyes. He had never heard of them (he is a dairy farmer with a few layers). So, I walked over and picked up one of my Buckeye roosters, (who coincidentally spent the entire 3 hours I was working in the pasture today, following me and crowing for me today), and I handed him to the guy to feel how much he weighs and how meaty he is. He said, "You just walk over and picked him up!?" (he watched me do it). Yes, I did, because that is the way a properly bred Buckeye is. They are docile and friendly, even without handling, which I do not do other than to move from pen to pen as chicks and juvies or if I need to cage them for some reason. Buckeyes will gather under your feet to see what you are doing and to look for treats, to the point even of getting stepped on. I LOVE my Bucks! and if I could have only one breed, they would be the ones, hands down. I have a few breeds, as you can see, and this winter, the only breed I did NOT lose any of was the Bucks.
I will PM you the rest.