I enjoy watching R.J. Aguiar. He does videos on his TheNotAdam channel and daily vlogs with his fiancé Will on their Shep689 channel. Ashley is pretty great, too.
lezbeontalk, heythere005, TheNotAdam, and ElloSteph all identify as bisexual tho happen to be in gay relationships atm.
She generally refers to herself as a lesbian but I saw her do a video with TheNotAdam where they both talked about their bisexuality.