Feel like Mermaid's best comps, or at least the ones I'm using, would be Sonic 2 and Mario. Those are also younger-skewing titles that played well to non-white audiences and are all established franchises with large fanbases that would buy tickets in advance. I would also say stuff like Avatar 2 and Black Adam works, even if the audiences aren't exact, since they also skewed super diverse in audience metrics and still had strong GA appeal.