whose to say lineage goes in one direction? Telma could very well be a sheikah, she is definately a Hylian(ears, as fa as i know the sheikah are merely Hylians that were like Ninja/secret service. Impaz is definitely a reference to Impa. I think the Twili are Gerado related, if there are more genders its because: one-gerado women mate with Hylian males two-being banished to the twilight realm changed them. When the Deku tree died in ocarina he mentioned black magic and evil from the gerados, also Ganon mentioning how he thought the race was amuzing, Ganon is no longer of their race, first he was always an outsider(the only male) second he is immortal and doesn't evolve with them, they have changed he has not like that Nine inch nail song, he has broke up with them, as far as he is concerned he'll be content lording birds, orcs, and pig things