as for 16-bit style games being ported reasonably well to the SNES or Sega Genesis/MegaDrive or Turbografx-16 or I *guess* we can count the Neo Geo...
Shovel Knight: Maybe? I feel like some major changes would be needed
Octopath Traveller: haha no
Rivals of Aether: actually probably could
Axiom Verge: would require major changes to the graphics and probably removal of some powerups but I think you could do a fair approximation