It's hard to say but they look like either 2 boys 1 girl or all boys. They have mohawk looking hair and noticeable combs. I'm not a "pr" but I have 3 silkies and was right guessing their genders from younger than yours. I'd thin they might be older than 9 weeks, I'd guess 12 weeks.
I thought they were were older than 9 weeks... thanks!
Snowcone I thought looked male from the beginning. But the other two have been lots of chest bumping. So IDK. If my 8 y old ends up with 3 boys he is going to be crushed.