Looking for thoughts on this 4 month old trio of lemon blue cochins

[horsegal301]

I was told these would be 2 pullets and a cockerel, being sold as a 4 month old trio. Looking to pick up from someone local and they're the only pictures I have to identify until I go to check them out in person Just wondering what you think? She said the comb on the last one is the biggest, which is definitely larger than the one on the left, but I obviously can't see the comb of the second bird, but I'm trying to see if I can tell anything by what little feathering is starting to come out. To me it looks like at least the first is a pullet, third potentially cockerel, and a dice roll on the second without seeing the comb.

Thank you!

 

[Pigeony]

I agree with your thoughts on the genders.