What breed are my hens?

[Aburch]

Need help identifying my chicks. My husband got them at TSC and forgot the names. Photo at 3 days old and now 6 weeks old. There’s 2 breeds here. 2 of each. The grey ones have slate legs.im thinking the brown ones are buff Orpington. The gray maybe Andalusian? Blue maran? Plymouth Rock?

 

[Gray Farms]

Red Sexlinks. The blues are likely one of the hatcherys "designer" blue hybrids. They're not Andalusians.

 

[Pretty Birds]

The brown ones are Red Sex Links.

 

[Brady29]

Greys are sapphire gems

 

[chickenE]

Agree with the above about the red sex link hybrids and blue hybrids. The blue one with red on the neck might be a Production Blue.