#1 looks like a chick I have that is either silver sebright or silver-laced old english game. I'm not sure which one mine is yet, but it sure is ugly right now while it is in that awkward partially feathered stage!
# 1 - what kind of comb does it have? If it has a single comb I would say Silver laced OEGB. If it has a rosecomb silver sebright(although those are some poorly coloured legs if its a seb).
#2 - has a rosecomb from the looks of it. and with the coloration I am almost temped to say golden seb, a dark one tho.
#3 - has a single comb, a beard and feathered legs so I would go with Salmon faverolle. How many toes does it have?
#4 + 5 - look like white OEGBs to me
#6+7 - what kind of comb do they have? Going by leg colour I would think they are golden laced OEGBs, but if they have rosecombs again some poorly quality golden sebrights.