I can try to take pics, I don’t know what their comb styles are. Or how to tell, and no I haven’t taken it off yet, just got hem today and figured I’d give her a break til tomorrow.
Comb type and seeing the legs on 1&3 would help. Basically, the comb looks like a hacksaw blade or a little shield at this point.and you'll have to look closely to see. 2 is probably an Australorp.
I'm going to guess that No.1 is an EE with that colouring and 2 as @debid says is probably an Australorp. Can't see No 3 clearly enough as the photo is dark, but looks to be lavender coloured. Would need more detail to be more sure of breeds and time will help with that, as more features develop.
agree - how old are they. It would be good to post new individual photos once they are 8 weeks old. They should be fully feathered out by then. Beautiful chicks BTW