mille fleur duccle bantam combs

[brittany4]

Do they have one type or can they come with different types of combs? I have four and I think they are all hens but two have larger combs at first I was sure they must be the roos but they are not taking on roo looks they all look the same just different combs. I think two have single comb (larger comb) two have pea comb (smaller comb)? Could this be the case they came from crackle hatchery? One more thing the ones with larger combs also have round comb things on underside of beak and the small pea comb ones do not so lost.