Both of these players were in a raid build when they logged out and I know they do not do keys in that build. Be careful when checking rio for talents.
EDIT: went back to look since most keys are logged now thanks to Aug. These are the highest keys for non-faeline builds I could find for each dungeon. Since not every group logs or they may not log because they don’t have an Aug, it could lead to a few dungeons being missed here or there but you can see the pattern.
Uldaman 23
Brackenhide 24
Neltharus 23
Halls of Infusion 23
Neltharion’s Lair 24
Freehold 23
Underrot 24
Vortex Pinnacle 23