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.
Neltharion's Lair
The Underrot
The Vortex Pinnacle
Brackenhide Hollow
Halls of Infusion
Uldaman: Legacy of Tyr
Freehold
Neltharus