All the different breeds are described on this page: https://www.backyardchickens.com/reviews/category/chicken-breeds.2/?order=atoz
In short, Salmon Favorelles are a french type of chicken, gentle, good pets.
Americaunas and easter eggers are cross breeds that might lay coloured eggs (eg...
I can't speak fot TSC (I live in Australia) but many breeds of chicken have chicks that look similar.
From talking to my BYC friends who've bought chicks from TSC, they are different breeds.