Age/sex/breed help! 7 new additions

[spacecore63]

Hi!
Just got these little guys from a local poultry auction so not 100% on breed/age/sex. They're in quarantine at the moment so I managed to get some photos. Just wondering if you wonderful people might be able to narrow down their age (I'm thinking between 5-8weeks? I've never had bantam breeds so its hard for me to tell) and gender if possible.

Breeds are what was advertised but would also love some confirmation.

Here's the new crew

1. sebright x duccle
2. sebright x duccle
both alleged pullets

3. leghorn, looking roostery imo
4. millefleur pekin
5. black araucana
6. grey araucana
7. brown araucana
unsure if these are pure or cross?

Thanks!

 

[BobStuart]

I think you have 3 roosters, 1 I think maybe a boy and 3 and 4

 

[Frizzle and Friends]

Looking at your birds

1. Hard to say because the sebright makes the offspring hen feathered, but something about that comb is making me feel cockerel, but it could be a pullet.
2. Definitely pullet on this one.
3. Without a doubt cockerel with a comb that big.
4. Likely another cockerel, but I can't be certain because it reminds me of a bantam cochin hen I had that I was certain was a cockerel for months.
5. Nothing screaming cockerel so I'm going pullet. I'm not seeing any red shoulder feathers or prominent comb.
6. Looks like a slow developing cockerel. You can see the male specific feathering appearing on the shoulders.
7. This one's a pretty little pullet for sure.

If anyone wants to add to what I said please go right ahead, especially on the ones that I'm uncertain about.