Figuring out that I'm intersex explained a lot for me and gave me a way to make sense of traumatic things from my pubescent years. Meeting people with similar experiences, even though they are traumatic experiences, was something very joyful for realizing I was not alone nor a weird freak.
Learning the term ipsogender was also a joyful thing for me since gave me a way to articulate that even though I agree with my assigned gender I have a lot of baggage about it and honestly relate more to trans people than to cis people.
(I'm also bi but I figured that out at an early age, my parents were reasonably supportive, and it wasn't the same kind of galaxybrain process for me as figuring out sex/gender.)
Also intersex, and am looking forward to the movie. I'm with you that we're starved for representation.
If reading is your jam, I recently found this big list of intersex ownvoices books here: https://www.bogireadstheworld.com/intersex-ownvoices-books/
And this is a personal plug but I'm co-organizing an online Intersex Book Club where we read those books: https://intersexbookclub.tumblr.com/