Need help identifying these 6 week old chicks

[Lerinreeves]

I received these two chicks from a friend that received extra in her shipment. She had ordered barnevelders, saphire blue rocks, and Rhode Island blues. But they sent two mystery chicks. These are the two mystery chicks. i have attached the 3 week and now six week old pictures. I think the black one might be a Rhode Island blue but I can’t figure out what the other one is. Any help would be appreciated! Thanks.

 

[The Happster]

Both appear to be girls!

 

[Lerinreeves]

Ok thank u.