To the OP, "Final Fantasy 3 (6)" is for indicating a confusion the publisher with the naming scheme. In the US (and I think Europe?), the initial release of Final Fantasy 6 was named Final Fantasy 3 because, iirc, the actual Final Fantasy 3, a NES game, hadn't been translated in time.
But would add to the list Mystic Quest and Bahamut Lagoon too. First feels actually designed to be an entry point to JRPGs, and Bahamut Lagoons is a Final Fantasy that got rebranded.
Also been curious to play Dragon Quest 6. Found a cart of it some years ago but life happens and I barely got to play it since.