Goldie looks like an Easter Egger and the 2 dark chicks look like my cuckoo marans when they were babies. All still to young to tell sex though. I would wait until they are 4-6 weeks and then you can get a better idea of sex and breed .
I got her from my work. (a dairy farm) the owner told me she was a baney, her mom is like a light brown color with a black tail. Smaller than a Plymouth Rock chicken. She could also be crossbred. Her comb? Im guessing you mean beak, which is like a orangey yellowish color with a black stripe on it.