I think >>43912159
had the right idea, electric coverage lets it muscle past toxapex, mantine, which would hard wall it otherwise. Grass is also an option if you're worried about gastrodon (seismitoad doesn't have recovery), and psychic will be nice for pex again and amoongus. Maybe kommo-o too, but I think it'll get stopped by bulletproof.
Looks like the only one that wouldn't be helpful is misty.