Haha yeah. Im a big fan of the one band, one song rule for group playlists (i actually do this a lot with my friends and shared Spotify playlists). Because like for this one, Type O Negatives entire discography is basically a Halloween playlist lol. They have at least 3 songs with Halloween IN THE NAME.
I was surprised no one had posted The Misfits yet really. Then again I kind of think Mim likely already has that on his LOL.
Horror Punk and Psychobilly both work out well for this, as half the lyrics are based on movies. I need to add some Skinny Puppy in here though.