I don't know of any list. However, I know that, barring Bronzong, anything with Levitate only has one ability. I am, of course, discounting any Megas that change abilities. Can't think of anything else at the moment...Is there a list of non-legendary Pokemon that can only have one ability?
Funny. I just watched that movie a few hours ago with my family. Coincidence? Yeah, most likely...