My family has 2 brothers who are men who like men, 1 woman who....likes women but sometimes likes men, and 1 who has never shown one way or another but dresses gender neutral and wears her hair in a gender neutral way. I'm sure there are more, but those are the ones I am aware of.
My wife's family, which is my family sort of in a round about way twice, has at least 2 women who like women, one of which dresses and acts male, but has not tried to transition, to my knowledge.
Explanation of above:
My wife's mother was married to my grandpas cousin, and had divorced him and remarried. My wife is a product of the second marriage. All of her siblings are blood relatives, a couple times removed.