These are a few of the other Bantams we bought at TSC. They are all around 6-7 weeks. Thank you. Buff/black bird: Black Tailed Buff Japanese, probably. Looks like a pullet for now.
Black Rosecomb, not sure about gender, but leaning towards cockerel.
Black Tailed Buff Japanese or Old English Game Bantam, probably a pullet.
Individual photos would help. However, I think I see a White Sultan (white bird on right) and two Porcelain d'Uccles (bluish colored birds).