The first is definitely an EE, the second I'm not sure..maybe a New Hampshire Red, and the third is not a black australorp--their chicks have blonde on their face and belly (all mine did anyway). See one here. Maybe a black star?
Bird # 2 Look like a Production Red
Bird #3 if it has yellow skin on the bottom of the feet then it could be either a Australorp or a Black Sex-Linked now if the bottom of the feet is Pinkish White then it is a Black Orpington.. ( I think I see some Pink on the one toe if that is true then it is a Orp.)
journey11 Not all Australorp chicks have the Yellow in them. Mine I had didn't and they were from good breeding stock. (not hatchery)