I think the guess that the last one was a GLW is not right. I have never had chickens and I am only going by pics I see in catalogs and on this site and others but, I think the GLW is actually a buttercup. I have not seen a good pic of a juvenile comb but, it looks really like the adult comb but littler.
Here is a pic of the SLW I think this one is right but, I can't tell is is a Roo?
BTW the little Polish that was tagged as a WCB Polish ended up be WCB and it is beautiful sorry I didn't post a pic.