Silkie mix sexing question

[Cierrascoop]

They look like pullets to me. Pictured are my silkie mixes at 9 weeks. First is a pullet. Other 2 (with red combs) are males. Last pic is of the 2 boys at 4 months. Ignore the mess- we’re in flockdown so I never have clean space for pics

So cute . I do believe the two I got are pullets. The black one has beautiful green and brown in her. But no noticable comb development at all. And no pointy feather development. I will post photos of them on this thread shortly. I am fairly confident that I did okay lol.