Class Frequency By Run:Each character will be counted for every run they are in.
Unique Class Population:Each character will be counted only once, despite how many runs they are in.
The Underrot
Neltharus
Freehold
Uldaman: Legacy of Tyr
Neltharion's Lair
The Vortex Pinnacle
Halls of Infusion
Brackenhide Hollow