1- As you said, cockerel. He looks like a OEGB to me.
2- Production Red cockerel
3- Ancona, no experience with this breed but from the lack of saddle and hackle feathers I'd say pullet
4- Ancona, ditto
5- Red sex-link pullet
6- Red sex-link pullet
7- Bantam Red Cochin, pullet? need a closer pic
8- Buff Orpington pullet
9- Buff Orpington cockerel
10- Buff Orpington pullet
11- Barred Rock pullet
12- White Rock pullet
2- Production Red cockerel
3- Ancona, no experience with this breed but from the lack of saddle and hackle feathers I'd say pullet
4- Ancona, ditto
5- Red sex-link pullet
6- Red sex-link pullet
7- Bantam Red Cochin, pullet? need a closer pic
8- Buff Orpington pullet
9- Buff Orpington cockerel
10- Buff Orpington pullet
11- Barred Rock pullet
12- White Rock pullet