the white one is a cockerel and he has a tint of brown
the black one and she like a small little qwiff on the top of her head ???? she has loads of white dotts!
The dark one looks Polish crossed with a barred or black bird.
The light one looks like he could be a red sex link roo crossed with a white EE hen.
Really they could be mixed with MANY different breeds, it's hard to know for sure.