Tori, all of the lavenders I see in your pics look like cockerels to me.
Both of Kathy's also look like cockerels, but they could be pullets that will have larger than normal combs. Those two are at the confusing stage that could go either way, but they are both the same sex. You cannot sex these birds by feather growth. They are not bred for it. Girls or boys could be slow feathering or fast feathering.
Nice looking birds everyone!