Choose by combat rhythm
The eight classes differ in target range, resource planning, defenses and expansion access. Open a class for its actual mechanic, leveling plan and bossing limitations before choosing a build.
These are class identities, not a claim that one class is permanently strongest. Season 15 balance and item interactions belong to the maintained patch record.
What to compare
Start with the action you will repeat in ordinary fights, then check the resource needed to repeat it. A class with impressive peak damage can still feel uncomfortable when its recovery loop does not match your preferred pace.
Check the expansion label on Paladin, Spiritborn and Warlock. Then compare the class's survival tools and whether its best available skills work during movement-heavy encounters.
Sources and verification
Official Blizzard material establishes named mechanics and access. QuestBase labels progression and build advice as editorial judgment. Exact live values should be checked in the client and maintained patch record.