9/10 times theyre gay unless theyre not i think its fair to assume most of them are though
here are a couple from Eden that aren't gay
Amar is Pan
Sanchez is Bi
Azathoth is Bi and Demiromantic
Rain is Aromantic and Pan
Jing is Bi
Garcello also Bi
Dygra and Cthulhu are Bi but have a heavy preference for women
Nyctelios is (mostly) aroace