Well, I would go with the Delaware hen covered by the Mille Fleur D'Uccle roo. The pink egg and light muff-free face with a bit of barring in the hackle indicates delaware, while the red wings and feathered legs indicate the d'uccle. Super cute!
Katsu looks like one of your Ameraucanas was covered by an RIR. Will be an easter-egger.
Bittie looks like she could be out of a silkie hen (do you have any?) Or a swedish flower, but they don't usually have the dark skin and neither of your roo options would produce that.
And I agree with Wyandottes7 with regards to sexing at this point.