In the beginning, Nature created MALE and FEMALE and it was good. Over time, however, this proved to be too limiting because there were people who were born one gender but identified more closely as the other and so TRANSGENDER was added.
But humans are a complex species and there were some who were born one gender but only identified as that gender some days and as the other gender other days. To account for this, GENDERFLUID was created
Then there is NON-BINARY which applies to either gender who doesn't feel exclusively to be that gender or the other but a mix of both. I'm not sure how this differs from GENDERFLUID but since it has its own designation, I assume it does in some way.
So the gender landscape has certainly expanded but the one I still don't get is OTHER. A number of people here identify as OTHER but what is that and how does it differ from all the previous identities? I've looked for the definition online but can't find it so I'll just ask here.
Remember, there are no stupid questions which is bullshit because, of course there are but this isn't one of them.