Feed store mixed up breeds and I’m not sure what breed my chicks actually are

[StrawHatHolly]

Possibly Big Update:

This morning I was changing the chicks food and water when I noticed one of the darker ones had (dare I say it) a CREST starting to form?? The other smaller chick doesn’t have any crest formation just yet it seems. Both of their legs are much more yellow than they were when I originally posted. Did I really end up with CCLBs in disguise as Faverolles instead of Buff Rocks!? Here are pictures of the crested chick in question.
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Okay so another update! They are a little over 4 weeks old and this is what they look like now! The big ones crest is just too funny right now, she looks ridiculous. The little one is developing slower then the big one. They are such sweeties. So calm and just love to be held. I’m so excited to add these little ones to my flock! I really think they are both girls as well. I’m definitely still getting some CCLB vibes from them.