I know what you mean, I have a couple JG that are laying one has a full red comb the other has no red at all and the comb still looks black/purple. The saddle feathers look rounded also but I have some lav orps that were rounded until new ones came in at about 20 weeks that were pointed. I really think some bloodlines cause this to happen and this year seems to be a rooster year.
I hatched a dozen of these last year that, at about 10 weeks, all appeared to be male from the redness. I ended up with only 2 being males. These are tough to sex!