Diablo 4 follow this Еuropean Matrix

NECROMANCER - PRIEST - SHAMAN
AMAZON - DRUID - DEATH KNIGHT
SORCERESS - PALADIN - WARLOCK
WITCH DOCTOR - MONK - BARBARIAN
DEMON HUNTER - ROGUE - WARRIOR

Without a Shaman and a Death Knight, you can’t explain Lilith from where and how she appears, and they are needed for the Demon Hunter to appear!
The Priest is the center of Warlock and Sorceres! Sorceres is the fragmented name of the Mage and as it was in Diablo 3 - Wizard , it was a little hyped!Warlock appears to take on the Wizard from Diablo 3!
Warlock separates Witch Doctor and Necromancer in Witchcraft!
Paladin in Diablo 4 will be Templar because of Lilith statues!
Amazon Hates Barbarian!
Monks are derivatives of temples and rogues kill them!
Warriors are needed because of The Eternal Conflict

Very interesting.

Why you didn’t post it in the D4 Forum ?