A "rom pack" (or "romset") is rarely one-size-fits-all. Because different emulators require specific file structures, your choice depends on your intended hardware and software. Cylum's Neo Geo ROM Collection (02-18-2021)
For a complete Neo Geo experience, your neogeo.zip file must contain these exact internal files: Neo Geo Rom Pack Download
If you aren't downloading a "Full Set" (which is usually around 3GB to 5GB), these are the must-haves: The Fighting Giants Garou: Mark of the Wolves The King of Fighters '98 Samurai Shodown II The Run & Gun Kings : The entire Metal Slug anthology (1 through 5 and X). Hidden Gems Shock Troopers (top-down action), Windjammers (power frisbee), and Blazing Star 5. Where to Look (Safely) A "rom pack" (or "romset") is rarely one-size-fits-all
If you download a ROM pack, you are pirating. This article does not endorse piracy, but it explains the technical reality of the scene. Hidden Gems Shock Troopers (top-down action)