I think adding Game B as a category would be a good idea to maybe add a fresher way to play the game. As I recall or have noted the RNG in Game B would provide enough difference in the potential of how levels can be beaten and how fast they can be beaten. So there would be enough variety of how stuff must/could be done to warrant it as its own category. These next ones are just potential ideas that I guess could be just summed up as random obligations thrown on by the player, or like category extensions as seen in games like SM64 and odyssey. 1 loop Game A/B glitchless. It is generally known that multiple glitches are patched out in the PRG1 version of the game so this category could be something that PRG1 players would have even ground on, plus it would shake up the strats for a few levels. (I guess you could also just seperate the versions like SM64 does with N64, VC and Emu.) I don't feel the strongest about adding that as a category but I think it would be a neat thing and could spice up the ways to play the game.
Adding Game B sounds good, will do it and see how much interest will be in it. As for glitchless, I'm usually not up to having this kind of category especially for such a short game, which consist of 1 major quite easy glitch and 2 smaller harder ones. Most NES games don't have one, it just feels like unnecessary additon to main leaderboard and aparat from that, many times it's hard to assess, where is boundary between glitch and normal skip. So as long as it's not a glitch, which completely breaks the game and skips substantial part of it, I'm opt for not adding one. We can think about it again, if there is a lot of interest. Separating versions seems like not that bad idea on the ground, but actually, it's even less fair than adding glitchless one, since there were people running e.g. japanese version, where glitch is possible, but were not incorporating it, because they just simply were not aware of it.