It could be apapronomial/apapronominal (casspronomial/casspronominal or pronouns indifferent) kymenambonec angenital, sexless trigenderstill/trigenderstatic or ergenderstill/ergenderstatic kymenian.

Kymenian, kymengender, genderstatic or genderstill: polar opposite of genderfluid; describing consistent, unswitchable, unalterable and unchangeable gender(s).

Ambonec: identifying as both female, male and neither at the same time.

Ergender: A little bit boy, a little bit girl, a little bit nonbinary, and the rest of your identity is something else.

Trigender: experiencing three genders.