One feature that was missing from Hearthstone for a very long time was a way to see a list of current top Legend players on each server. You could only see your own rank, as well as ranks of your in-game friends, which meant that you had no clue who takes most of the places. The only certain ranking was the one posted a few days after each season, a ranking which was the base to things like tournament qualifications and point distribution. But it’s no longer the case.
Blizzard just added a way to view the rankings live. You can see the current Top 200 Legend players in either Standard or Wild format on Americas, Europe and Asia-Pacific servers. It’s supposed to update every 5 minutes, so it should be rather accurate (definitely more accurate than guessing who takes each spot). You can find all of the leaderboards here.