I'm not sure how popular this category would/will become, but I've seen a couple of people speedrun obtaining the new advancement "How did we get here", which requires having every potion effect legitimately obtainable in Survival at once.

The only runs I can find were carried out by u/redstonehelper and u/ARN64 over on r/Minecraft

u/redstonehelper's run (3.22hr IGT) https://drive.google.com/file/d/0B9X9Asn6WnEhR09jRFRQc0czQnM/view

u/ARN64's run (1:44.53 RT)

Is it something that would be considered for the leaderboard? Even Dinnerbone, the creator of the advancement, mentioned the legitimacy of the run. https://twitter.com/Dinnerbone/status/875774163172155394