Pain Split is a Normal-Type move that ghost type Pokemon know.
And YES Pain -Split does hit ghost type Pokemon (tried and worked) on showdown.
PAIN SPLIT MOVE HERE
Here's proof it works on ghost types….. I used Pain split on the 3rd turn and Trick on the 4TH just to prove..
Also here's Spiritombs sheet EGG MOVES HERE Breed a MALE misdreavus with Pain split learned through level up at =lv 32= with a any type of spiritomb.
The male will pass down the egg move.