The films in this list are those published in the "Further Reading and Resources" section of Susan Stryker's book Transgender History. I made it primarily for my own reference, but if there's an already existing version of this list on Letterboxd, I couldn't find it (though I probably didn't really look that much).
Not on Letterboxd:
Adventures in the Gender Trade dir. Kate Bornstein (2013).
Junk Box Warrior dir. Preeti Mistree (2002).
Multiple Genders: Mind and Body in Conflict prd. Anna Laura Malago (1998).
Transsexual Menace dir. Rosa von Praunheim (1996).