I recently completed a speedrun for the new category, Gamble%, where you try and reach the gambling room in Papyrus' house as fast as possible and win one game of slots. I will add the link to that stream as soon as possible.

I do not think this will be added to the leaderboards, because this run would be exclusively for Xbox players. The only feasible way for this to be added would be for a moderator approved mod to the PC version of the game, which is very unlikely.