As much as the comb is kind of small I’m leaning towards cockerel for the second white silkie. I’d say that silkie mix is a pullet. Based on the fact that the first white silkie has a V shaped comb, small wattles, and a not very big comb, I‘m leaning towards pullet, but she does seem to have streamers. I have heard of silkie hens with streamers, but we will see.
I do actually have the first silkies almost twin
Just so you know everyone here will be making a guess, not a guarantee. Silkies are hard to sex, and you won’t know 100% until they crow or lay.