Now who are these five?
Come, come, all children who love fairy tales.
The platform have at least 238 games - many of them also made for the "two others". I am not sure if there were any platform unique games for the FM-7 however.
Platform unique games aren't a thing. What's interesting is if there are platform unique releases, i.e. releases that only work for the platform in question, and that won't run on other platforms, or that have an adapted performance on that specific platform.
F.ex. the Commodore 128 wouldn't be a viable platform on VGG if every single game for it also ran on the Commodore 64 with the same performance.