Identifying the roosters

[Tori14]

We have 4 young bantam chicks. By young I mean they are 3-5 weeks old. There is one that looks like a rooster to us.
His/Her name is LLD:

The other ones in our small flock don't have such a large comb and waddle. Here they are:
Lana Del Chicken:

Beef:

Cheese:


If any body can help us out it would be great! The quicker we find out the better

 

[chicknshrimp]

Top is a roo, 3rd is a pullet, other two I'm not totally sure, they have decent sized combs for that age. Good luck, they're really cute!