I want to know which non-judged Olympic event(s) is/are hardest for one country to dominate.
Which event has had the longest streak of totally different countries winning gold, with the streak including the most recent Olympics? That is, all the countries are different, not two alternating, so the streak doesn't include any country more than once, and includes either the 2018 or 2021 Games.
This could be either the Summer or Winter, not including Paralympics.