>>54751307VGC has more out there picks, but it's a way more centralized metagame, people screech about Lando in past gens having like 60% usage, but the closest OU Singles ever had to something like CHALK was The Big Three in RBY, to the best of my knowledge, whereas CHALK was a core composed of five mons, in current VGC almost every team is on Flutter Mane + Iron Hands, Ogerpon, and Urshifu, etc.
For reference I just went on Victory Road and clicked on the first completed event, here's your top cut teams.