Hen or Roo? (I have two I’m not certain on)

[HaasFamilyFarm]

All of these are 3 1/2 months. They are all related (same rooster- Cream Legbar) Hens are Cuckoo Maran, Olive Egger and Easter Egger.
I believe the grey splash one with Pea comb is a rooster. The black one I’m 50/50 as I’ve seen hens have red comb and waddles, they don’t seem to be as big as a grey one with the same comb. The darker Cuckoo Maran mix has a lighter comb, and a lot of the Roos from this mix have yellow legs. (Just an observation on a few I know are roosters) please help! Mixes for me are the hardest to be 100% certain! Thank you

 

[TheOddOneOut]

The black one first pictured is male.
The grey one pictured second is male.
The barred bird with muffs is male.

 

[HaasFamilyFarm]

The black one first pictured is male.
The grey one pictured second is male.
The barred bird with muffs is male.

Good! I have someone wanting three roosters and I grabbed these three but then started to question myself! What gave it away? Tail feathers or Redness of the face/comb Wattles?

 

[TheOddOneOut]

Good! I have someone wanting three roosters and I grabbed these three but then started to question myself! What gave it away? Tail feathers or Redness of the face/comb Wattles?

Redness is a telltale sign, yes.

 

[HaasFamilyFarm]

Thank you so much!!