First players to reach X total XP:

100,000,000	Shadow Dl	July 17, 2016	See rest
200,000,000	Shadow Dl	December 29, 2017	See rest
300,000,000	Shadow Dl	December 29, 2017	See rest
400,000,000	Shadow Dl	May 21, 2023	See rest
500,000,000	TBD		See rest