Gynx

Gynx is a non-binary gender in between female and androgyne. The masculine counterpart is androx. The epicene counterpart is neutrangi.

It is similar to xirl, demigirl, angyne, and girlby.

History
Gynx was coined by deactivated Tumblr user opalescentorbisian on January 8, 2018. Two flags were created at the same time. Another gynx flag was created by @vinny_spice on instagram and brought to Tumblr on March 6, 2019 by deactivated user qxej.

Resources
https://www.deviantart.com/pride-flags/art/Gynx-3-869557967