develops headmates for every pronoun and whenever you try to misgender me the alter with those pronouns fronts at the same moment perfectly parrying your transphobia

Something that always bothers me in mental health spaces is the fear of relating too much to each-other across the lines of different disorders. Too many times I've met people who are not dissociative systems, but have dissociative experiences (such as from BPD), and they trip over themselves saying "no no, I mean, I don't REALLY understand what you go through, my thing is totally different," and it makes me a little upset. Disorders are just clusters of symptoms packaged together in a certain way, that's why the names and criteria often change across DSM and ICD editions, and viewing them as entirely exclusive clubs where only they could possibly understand anything about each other isn't a particularly healthy way of seeing it. The lines between disorder labels are blurrier than you think. You are not being a bad person or overstepping for relating to symptoms of a disorder, or people with a disorder, without having their specific label. Very rarely (if ever, frankly) is there a symptom that can only occur in one disorder, or even one type of disorder. Psychosis can occur in countless circumstances. Dissociation and identity compartmentalization can occur in countless circumstances. It's better to focus more on your specific symptoms and building community with your fellow neurodivergent people, using the resources that help you regardless of if they were specifically made for your diagnosis, over worrying about whether or not you're "allowed" to relate to something or experience something similarly to someone else.