I'm currently using a nintendo switch controller to play the game, and the in-game keybinding options allows me to use the entire switch controller flawlessly, but I can not navigate the menus at all with either the joystick or the d-pad regardless of how I keybound them. I'm still able to use my keyboard to navigate (arrows, space, and A/D key) so it isn't super important.

That's weird, I thought the D-pad should work. I'll check it out, thanks for the report.