Can you sex these month old bantam cochins?

[Chubby Chicken]

I have seen threads where folks can tell the sex by the comb. So here are mine. They were born 4 weeks ago.

I think the frizzle is a pullet



mottled pullet?


mottled cockerel?



If it helps pen was described as:
There are Black Cochins (roo & hens), Partridge Cochins (roo & hens),a black frizzle hen, a bantam RIR hen

 

[ms.cluckling]

I'd say your guesses are about right