By pure number alone, Kenmochi has near 50% 50% male to female ratio, and he often pull Kuzuha's number in terms of CCV, followed with Kuzuha, and Kanae.
For female one, Mito probably, with 25% female viewers. Gibara used to be the one when she put out those Twisted Wonderland gacha vids. Crossick are popular with female (mostly lesbians) too, but not sure how they're doing individualy, Sukoya mentioned her ratio was 20% female early last year.
