Wondering if anyone can tell me what types of chickens these 3 are??

[Mystyk13]

We bought some from TSC and they told us they could be a few different kinds...I'm hoping someone on here may know what they are. There are 3 different kinds in this pic....thanks everyone!

 

[bishopschickens]

Barred Rock on the right and Buff Brahma in the center...not sure about the right maybe australorp.

 

[JennsPeeps]

Quote:
I concur. If the one on the right has a grey chest, probably a black australorp.