Side views are better, but...
First picture:Left, cockerel- GLW Right, maybe an EE and a pullet. If it is a GLW, which I don't think it is, just a similar color patter, it has a single comb and dark feet which is all wrong for a Wyandotte
Second picture: Partridge Wyandotte cockerel
Third picture: Red Sex Link pullet
Fourth picture: need a side view of the white one, but it looks to be a pullet, maybe a White Rock? The other one is most definitely a GLW cockerel.
Last picture is a Barred Rock cockerel. The white spot on the head is very distinct and he has a lighter coloring that you see in pullets.
Sorry, I hope you can get more girls because you got a few boys in that batch. It is a nice variety, but unless you can keep roos, you should probably either find them new homes or plan to butcher them in about 16 weeks, they are good dual purpose breeds.
Here is a page, scroll down a bit to find a green box with sketches of the different comb types and you can see what the difference is:
http://hubpages.com/hub/Taming-Wild-Roosters