What breeds of chickens do I have?

[Farmchick0900]

Where to begin? I was originally think the black chicks were barred rock, but after looking a little closer, some have a redish brown tint to their faces which made me think black sex-link. However, even the ones who don't have this red coloring still have white on the top of their heads. Any ideas? I also have lighter colored chicks which I'm thinking may be EE. I'm new to this so I'm looking for any help!
I have attached 2 pictures of each chick I'm hoping I can get some answers! Thank you so much!

 

[Top Rooster]

The brown one may be a brown leghorn that's what mine looked like as a chick

 

[Chicken Girl1]

Where did you get them?