Question about Rank X

[Diolass]

Is the rank X leaderboard a global thing? Or is it separated by the regions?
I've noticed being matched up with Japanese players and that some top players from the splatnet 2 app have Japanese names

 

[MindWanderer]

They didn't announce anything about region-handling being different between X and the lower ranks. They're probably still paired by ping time, but with only 1% of players falling into Rank X, there will probably be more trans-oceanic matches than other ranks.