Void Cargo now better detects and selects connected gamepads automatically, preferring standard-mapped controllers when several devices are available.
So I recommend to keep the detection to "Automatic" but in case this does not work for you or you have multiple gamepads connected: A specific controller can also be selected under Options > Gamepad. The selection is saved and used for both menu navigation and flight controls, which should make setups with multiple connected input devices much more predictable.
Thanks to all demo players who notified me of this issue!