What breed of 2 week old chicks are these?

[LadiesAndJane]

Sebright chicks looks like this:

 

[Lilly10310]

Ok

 

[LadiesAndJane]

What about the brown one

Can you get a close up of comb? Also what color feet/legs does it have and are they clean or feathered? Can not tell in photo provided.

 

[Duckbreeder2020]

First two are silkies.
Third one is not a plymouth rock, though not sure what breed it is
4th one is a black cochin.

X2

 

[Lilly10310]

It has clean feet and legs

 

[TheOddOneOut]

Plymouth Rock
View attachment 2762814View attachment 2762815

Not a Plymouth rock