Classic has also long been used as a fancy term for "old." Nobody is using the term "Classic Automobiles" to refer to a 2019 Toyota of any stripe.

I honestly would prefer that one section be limited to certain timeframes and another section be for newer stuff, but for this topic it might be okay to just say "screw it, go for broke."

Hey, I just realized Blaster Master should count as a Metroidvania according to the earlier standards, and there are like a million games in that series.