Socks is a black cochin. maybe a roo, since its tail feathers are slow.
Black betty is a black sex link.
I cant see red very well, but some chickens with similar feather patterns are welsummer, brown leghorn, easter eggers.....
I dont do well with guessing all black chickens.
Soot is actually not all black. She has brown trimming her feathers up by her neck and on her chest. I don't mind if any of em are roos, other than they were all in the pullet bins when I got them!