Yes, yours is old enough that it "should" be obvious, but it doesn't seem to be.
Do you know for sure whether it is crowing (male) or laying eggs (female)?
If you are not sure whether it is laying, you could check the butt to see:
https://www.backyardchickens.com/articles/who-is-laying-and-who-is-not-butt-check.73309/
If it is laying, of course it must be female.
If it is not laying, it could still be either gender.
If it is really important, you could try DNA sex testing:
https://orders.iqbirdtesting.com/order-bird-dna-test/
I'm inclined to think it's a male who is maturing more slowly than normal, but I really do not know for sure. It could be a female who is getting close to laying age. (The comb is too big for an immature female-- so if it is a female, she should be laying within a month or so unless she already is.)
Some chickens do keep everyone guessing for months, and it can be very frustrating!
Jupiter is definitely male, Ruhama is most likely female, and the "sexless" one I think is more likely male than female, although I'm not positive about "him."