First players to reach X total XP:

100,000,000	Wombocombo	April 15, 2019	See rest
200,000,000	Wombocombo	April 15, 2019	See rest
300,000,000	Wombocombo	March 17, 2020	See rest
400,000,000	Wombocombo	July 19, 2021	See rest
500,000,000	TBD		See rest