This is my second coining so here:

Unnugender:

Bigender + Demigender/Quartergender/Dodransgender

Piengender:

Pangender + Demigender/Quartergender/Dodransgender

Poliengender:

Polygender + Demigender/Quartergender/Dodransgender

Omthropagender/Omngender/Onmigender:

Omnigender + Demigender/Quartergender/Dodransgender

Triosegender/Rosetrigender/Trosiegender/Trirosegender/Trirosiegender:

Trigender + Demigender/Quartergender/Dodransgender

Bisenmualgender:

Multigender + Demigender/Quartergender/Dodransgender

That was it! If any of those are already something, tell me. I could erase it!