Help with breed identification please

[Kris2768]

I received my first order of chicks from McMurrays today and was wondering what some of the breeds are? I have been studying pics for hours and I think maybe I have a couple barred rocks, black star, buff Orpingtons, but I am not sure what else. Especially the "free rare exotic chick", I can't find a pic anywhere comparable. ( it is the gray mottled looking one)

 

[Poultrybreeder]

I see a turken, barred rock, and I can't tell for the rest, too young really