There are 3 types of champions in MCOC
Battlegrounds has become the most important mode in MCOC
You can see players ranking up champions based on battlegrounds
So there are 3 types of champions classification
Nukes
Tanks
Irrelevant
Champions that can deal huge amount of damage in the shortest time are nukes e.g Cosmic Ghost Rider, Juggernaut etc
Champion that are tanky and can drag the time are tanks e.g Nick Fury, Serpent, Sasquatch etc
Champions that fit in neither category are irrelevant e.g Aegon (Useful in everest content but useless in battlegrounds)