I'm looking for various stages that are widescreen. Problem is, I have 50/50 chances that some weird graphical error will appear in the stage and not have the zoom work with some black bar on top or something. I'm looking for stages where I won't have that problem, and that look cool. So feel free to share some cool stages that might be interesting.

the problem is that at the moment most things are made for mugen still and not the clone engines like ikemen plus and go so you will have a hard time finding ikemen only ones i guess idk

Did you try Beterhan's "true widescreen stages"?