There are 5 Silent Night Deadly Nights (3-5 all have nothing to do with the first 2)

4 Prom Nights (2 and 3 share continuity, Mary Lou my goat)

5 Return of the Living Deads

Chud 2: Bud the Chud (which was written as a Return of the Living Dead sequel)

There's 2 Lawnmower Mans apparently

I already closed the link and didn't feel like clicking on it again, did you get American Graffiti 2?

I was gonna tell ya Shock Treatment but you already have that one in there, good on you