One of the great things about the D&D 5E Monster Manual (a concept which I blatantly copied when creating the Bestiaries for WOIN) is the standardised NPC stat blocks which can be referenced by an adventure simply by bolding it. Volo's Guide to Monsters expands on that with a whole new bunch of NPC stat blocks, which I have listed below (thanks to @JohnnyZemo for kindly providing the list!)
Abjurer
Apprentice Wizard
Archdruid
Archer
Bard
Blackguard
Champion
Conjurer
Diviner
Enchanter
Evoker
Illusionist
Kraken Priest
Martial Arts Adept
Master Thief
Necromancer
Swashbuckler
Transmuter
War Priest
Warlock of the Archfey
Warlock of the Fiend
Warlock of the Great Old One
Warlord
Apprentice Wizard
Archdruid
Archer
Bard
Blackguard
Champion
Conjurer
Diviner
Enchanter
Evoker
Illusionist
Kraken Priest
Martial Arts Adept
Master Thief
Necromancer
Swashbuckler
Transmuter
War Priest
Warlock of the Archfey
Warlock of the Fiend
Warlock of the Great Old One
Warlord
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