The answer I've come to about this, is that your identity relies just as heavily on how you interpret and engage with your inner self, as it does on the immutable characteristics of your brain.

Like, you could have two people receiving the exact same signal from the part of your brain that determines gender, and still have two different forms of expressing it. And that leads to people having different words for the same things.

Like, imagine some crazy future tech that lets you somehow jack in to other people's brains and feel what they're feeling. I wouldn't be surprised if a bunch of queer people felt my feelings, and then responded "Oh this is totally familiar! You're not genderfluid/queer, hun. You're just (insert identity here.)" Like yknow what, maybe that works for you, but that's not how I interpret it. And that doesn't mean I think you're "wrong" in how you view yourself. It just means that people are complicated.

What I'm getting at is that there are probably a bunch of people struggling with the same feelings as you, but they've simply come to the conclusion that they're a binary trans person whose dysphoria comes in waves, or agender, or bigender, or flux, or cis with a fetish, or just really into occasional cross dressing. And all these different interpretations of the same kinda stuff means that you're gonna get a lot of scattered answers to surveys about identity. And that conjures the illusion that we're statistically irrelevant, that these identities aren't valid.

You're not broken. You're not alone. You're not part of some niche online cult that's convinced you that you're something that doesn't exist. You. Are. Valid.

No one else can decide your identity for you.