Multiellic!
Multiellic: The exclusive attraction to multigender people. This could be people with any number of genders, or a specific number. If it is a specific number, -ellic or -llic can be added at the end of it (for example, biellic, triellic, quadellic, quintellic, hexallic, septallic, octallic, enneallic, decallic, panellic, omniellic, fluidellic, etc.)
Bigeninic and paninic can be considered alternative names for biellic and panellic.
We (Weniviere & Angel) decided to recoin the orientation "multigenic" and its flag, which we made years ago, because that terminology is used for systems with multiple origins, which we didn't know at the time, and it has bothered us ever since we found out. The -ellic theme is inspired by other tria- microlabels (lunaric, solaric, saturnic, apstellic, neustellic, oustellic, stellaric, and spacialic.)
On the flag, the black represents genderlessness, demigenders, and multiellic people that are aro-spec. Magenta represents feminine genders and sexual attraction. The purplish-pink represents a combination of romantic and sexual attraction. The purple represents androgynous genders and multiellic people that are ace-spec. Brown represents cultural genders and BIPOC people. Orange represents outherine genders and alterous attraction. Yellow represents xenic genders and queerplatonic attraction. Blue represents masculine genders. Green represents neutral genders. White represents fluid/flux genders, attraction, or relationships.