Femigen

 is a Female gender that is deeply tied to one's Feminine Gender Nonconformity. Femigen is a Female gender in which one’s Feminine Gender Nonconformity is part of their gender itself, not just part of their expression.

Etymology
'-gen' originates from 'GNC', the abbreviation for Gender Non-Conforming. 'Femi-' presumably originates from Feminine, however the coiner never specified.

Definitions

 * femigen: a female gender that is deeply tied to the person’s feminine gender nonconformity; a female gender in which one’s feminine gender nonconformity is part of their gender itself, not just part of their expression. though ‘feminine gnc woman’ might sound like an oxymoron, queer femininity often subverts societal expectations of a feminine or female person. this is a term for gender nonconforming women who feel that, though they consider their behavior, presentation, etc. to be feminine, they do not conform to the expectations placed on their gender. - Neopronouns, 2020

Supersets

 * Formaregen