They have been known to date literally everyone (including animals i think), and they can change their form. Not the textbook definition of gender fluid and pan sexual, but they still count. Even if they do use magic.
An example of this is Aphrodite, who can be seen as anyone the person finds beautiful ig. So she changes form and like other gods, is probably with many different genders with no preference.
Idk if this counts, but it makes sense that the gods would be this.
(Greek mythology rlly sucks, but at least we have LGBTQ Representation *nervous laughter*)