This is the picture from FB that you couldn't see.
lets see they would all be about six months? They all look like pullets to me....or has any of them crowed yet? The red one on the left is definitely from our EE stock, the white one probably is a mix, but the black and white? hard to tell but not typical Iowa coloring and Iowa cockerel have much more comb by 6 months. Our Iowa mixes and boys usually start to crow at about 3 months with a pretty well developed comb :)