What breed and gender?

I'm pretty new to raising chickens but we had some growing up so I know a little. I have 6 chicks between 5-7 weeks. 2 white leghorns, 2 golden sex links, 1 speckled Sussex and 1 white lakenvelder. I'm starting to think my "white" lakenvelder isn't white but maybe a golden lakenvelder or something else? I'm also thinking one of my leghorns is possibly a roo due to the fact his/her comb is red when the other one is still yellow. They are both 6-7 weeks. Since my city doesn't allow roo's I can't keep it. The ranch store I got them from said they were pulleys but I'm just not sure. I'm also not to sure if my lakenvelder (5 weeks) or my speckled Sussex (6 weeks) are pullets or roo's either. They weren't sexed at the ranch store so I took my chances.



These are our 2 leghorns (diamond is facing me, lightning is in the back) 6-7 wks,and 1 of our golden sex link (chicken nugget) 6/7 wks. I think lightning (the white one in the back) is a roo. Its comb is red and already growing waddles.



This is our bigger golden sex link (peaches) 7 weeks, and our "white" lakenvelder (Rosie) 5 wks). Not sure Rosie's gender but it may still be too early to tell.



This is our speckled Sussex (pixie) 6-7 wks. Not sure this ones gender either.



This is another one of the 2 leghorns.



Another one of our lakenvelder, Rosie.

You have a golden lakenvelder, and your one leghorn is a rooster. Your instincts are correct.

X2

Is the rooster crested though (has a raised area of feathers on his head)? If so he can't be a leghorn.

I don't think he does, he looks like the others except the comb.