At present, there's just a conditionality, presumably, and after that the coding for each of them being released. You could just use that for all of them, and it might take up less space than conditions for releasing each of them. That way the only condition for each of them being released would presumably be to talk to a specific person, trigger a specific event, etc. There's probably a few ROMs which involve the legendary dogs, especially ones which are re-makes of G/S/C, etc., but I'll let others suggest any which steer particularly close to the source material of FR/LG, as well as the more specific coding if they've interacted with that.