Look like maybe Dutch, with the white earlobes. Could be pure or mixes. I think most American Game Bantams have blue/slate legs (except white bird have white/pearl legs), Dutch would be similar in leg color, Old English Game Bantams would have white/pearl legs in most colors except colors like Black, Brassy Back, etc. With all that I think you have some mixes.
I'm thinking that your birds are probably a mix, but I'd say that there may be some Leghorn influence. That would explain the flighty-ness and the white earlobes. Hope this helps.