Ok, I thought so. The first one looks like a pullet but the other two look kinda rooish :/
First guy is a cockerel. I don't see any dark red on his wings yet, so keep an eye out for that.
I agree with dan26552 on the other chicks. First one appears to be a pullet. The other 2 are suspicious. Wait and see. They can change a lot at this age.
Can you update us in a few weeks?
Ok, so I freely admit I am definitely a newbie. The last 2 pics are of the same chick. I went back at my photos and looked at their feathering pics, and I definitely have the last one twice. I'll try again. So sorry about that. Feeling pretty embarrassed.

Safe to say we all agree roo here:
And this one probably pullet
This is the one I posted 2 pics of (could go either way?).
And here is my camera shy, elusive chick I didn't post before.