What breed are my Chicks?

[Bliss Chickens]

Hello everybody, I have four Bantam chicks, and I was wondering what breed they are! None of them have fuzzy feet or fuzzy heads. The first picture is the biggest one. The one in the second and third are about the same size, and the one in the last picture is very small and has a white spot on her head, and some here and there on her wings. I am mainly curios about the last one's breed but any comments would help!

 

[oldhenlikesdogs]

I believe a sebright, a bantam welsummer, and a bantam barred rock.