Silver Cuckoo Moran that is. Keep a close eye on your Astrolorp Bantam (the completely iridescent chicken). It may turn out to be a pullet, since Asrolorps have iridescent feather if they are male or female. Send pics of its tail in a few weeks.
All the others are Cockerels. You can tell by their tails and saddle feathers. They are very pointed instead of broad. I need a better pic of #2's tail to make sure.
It really comes down to their personalities, which can change. I have a friend whose Lavender Orpington pecks her when she wants a treat. They can be very bossy and will sometimes believe that we are here to serve them.