The little dark one might be a japanese bantam- they have the dragging wings that way. For reference, here are two of my 1.5 week old japanese banties:
Straight up tail is a definite sign! Mine are just getting theirs in. :-)
The first one and this one have 4 toes and feathered legs. Mille Fleur D'uccle
Is this last one with the green legs a golden sebright? Sebright would be my guess too, but I must admit I've never met one in person! Looks just like other chick pictures of them I've seen, though.