Fuller has said that since the captain has not been cast, they don't know the character's gender, because that's "not how [Fuller] writes characters."
So, given that if the character had already been established rather than created new they would know his/her gender, that leaves Garth et al out entirely.
Fuller also says he doesn't know the "Axanar story."
So, given that if the character had already been established rather than created new they would know his/her gender, that leaves Garth et al out entirely.
Fuller also says he doesn't know the "Axanar story."