1. Red sex-link male.
2. Buff Leghorn female (white earlobes), not knowing her age, it could be a Buff Minorca because of the white legs, but I'm assuming Leghorn and that she's an older bird who has used up the yellow in her legs and beak.
3. Silver-Spangled Hamburg female
4. Black Australorp male (I can't see a hint of yellow on the soles of his feet, so I'm going to assume Australorp.)
Cara, other breeds can have combs that flop over as well, especially those that have older hens. My production red for one had a comb that flopped onto itself.