First, you have no orpingtons, buff or otherwise. You have production/generic red birds, the one looks like a pullet so far. The combs and wattles tell us they're cockerals, yes hens do develop larger combs and wattles but not at this young age, more like 4+ months. They also look like they're getting hackle and saddle feathers, those long flowy feathers that only males get.
btw, I think your easter egger is also a roo. Sorry.
btw, I think your easter egger is also a roo. Sorry.