I don’t know what it is, I cannot pinpoint it, but my voice is different from that of cis-men. I hit the notes of baritones, I get them right, and I can even go as low as many basses, but something is different: I sing the same notes as cis-male-baritones but it sounds different somehow.
And probably this is why I still get misgendered by people if the only cue they have is my voice… somehow, it’s not a male voice.
And probably it will never be.
The Little Prince and the Fox 