Rhode Island Blue or other? Rooster Confirmation?

[sparklez]

At least 2 of these of Rhode Island Blues. Which ones? What is the third, or are they all RIB (i got a freebe chick with unconfirmed breed).
I am thinking the one that looks like a rooster is a RIB rooster haha. what do you think, no attempts at crows yet. I cannot have a rooster where i live so i want to be sure before i get rid of him.
all about 12 weeks old.
(FYI in total i ordered, RIB, RIR, Buff Brahma, Olive Eggers, Gold laced wyandotte)

 

[DotToDot]

I’m not amazing at sexing chickens, but the fourth picture is definitely a roo.

 

[BastyPutt]

Dolly and pepper are going to be females and your olive eggers. Pepper you can see her copper leakage on her hackles. Probably a Maran x blue ameracauna. These are most likely from "mt healthy hatchery" and this is how they breed their olive eggers.

The 4th pic is a cockerel Rhode Island blue.

 

[Prince and Pavo]

Hello!

My guesses are (in order of pics) pullet (cockerel in the background), pullet, pullet, cockerel, cockerel (I’m assuming it’s the same one as in the fourth pic…)

May I ask, what breed is the pullet in the first picture? I have one that looks very similar but she is a hybrid that I hatched, and I can’t figure out who the mother is/was.