Ok Barb. Here are pics of mine for comparison. (For those of you who dont know, we have the same breeds of chicks, from the same hatchery, that are the same age because we got them at the same time! ) So, comparing mine to yours should help you. I am certain of the sexes on my Welsummers, so...
Ok, here are my guesses. I looked up some Welsummers on Google Image after I got off the phone with you and I'm comparing yours to them.
#1 possible roo, but not a whole lot of red in the comb, just on the face so I'm not sure.
#2 pretty sure its a roo.
#3 pullet! Pretty sure of that!
#4...