New Umbrella Terms
Fiagender Spectrum / Fiaspec: an umbrella term similar to FINgender for anyone on the "female" viabinary-to-binary spectrum; anyone whose gender is female, partly female (but not partly miagender), or in some way similar to/resemblant of femaleness (without necessarily being FIN), ex: nonbinary woman, lunarian/woman-aligned, demigirl, gxrl, xirl, juxera, altegirl. Can also be used as a gender identity all on its own.
Miagender Spectrum / Miaspec: an umbrella term similar to MINgender for anyone on the "male" viabinary-to-binary spectrum; anyone whose gender is male, partly male (but not partly fiagender), or in some way similar to/resemblant of maleness (without necessarily being MIN), ex: nonbinary man, solarian/man-aligned, demiboy, bxy, xoy, proxvir, alteboy. Can also be used as a gender identity all on its own.
Meso/Liagender Spectrum / Meso/Liaspec: for anyone whose gender is both fia- and mia-; anyone with a mesogender (including femache centrigender & ambigender). Liagender can also be used as its own identity.
(Use of terms in conjunction with "spec" or "spectrum" refers to the whole spectrum. "Mia/Fia/Liagender people" would refer to anyone who identifies as one of these.)
Note: these are different from F- and M-gender, because they do not include certain ideobinary concepts (specifically FIN/MINgenders). Fiaspec people don't necessarily have to identify with notions of femininity or be feminine-aligned, nor miaspec people with masculinity. For example, the fiaspec umbrella term would not include neularian-aligned people, as we identify with "neutral" femininity rather than femininity and womanhood; it would, however, include terms like NINgirl or MINgirl.
Also Note: Although a bit unlikely, (name)genders are a concept and the term “miagender” (even fiagender or liagender) may already be in use. The names for mia- fia- and lia- as individual identities are subject to change.