It might help if we knew what breeds you ordered from McMurray. We got ours from McMurray too.
I think speckledhen is right about the first one. With that muff, he looks like what McMurray would call an Araucana/Americana.
Your second pic looks exactly like our Araucana/Americana pullet chick.
Did you order a Jersey Black Giant? Or Black Australorp? The last one could be either. I don't know anything about the Australorp, but do have a Jersey Black Giant. The bottom of the feet on a Jersey Black Giant will be yellow and it will have chocolate brown eyes. Our girl is the calmest in our flock of mixed standard heritage breeds.
Pretty birds!