I'm pretty sure I tested normalize plate judgment a while back in game and it is correct on PS fwiw...Magic Bounce, -Ate fakespeed, having something faster than it, other Ghost types, phazing moves, Odor Sleuth and Foresight are both normal type anyway, Judgment (overrides the Normalise, pretty sure not intended behavious but works anyway)
Either way, most teams can deal with normalize Gengar just from existing. If you are having an issue with it, then you are likely having a hard time against other things and should probably improve your team some more.