Both pictures are the same three chicks.
These are:
Dad: Black Copper Marans
Mom: Crested Easter Egger (dad: Ginger Red Easter Egger) (mom: 1/2 Polish 1/2 Easter Egger) so 3/4 Easter Egger 1/4 Polish.
The yellow one is crested. The two black ones I can't see a crest forming. All three are by one hen do they are full siblings.