13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Puppet of Helcular42–44Hillsbrad Foothills
The Plains Vision7
Gurek45Spirit Healer
Captain Obvious1Boat Operator
Cap'n Copyright1Boat Operator
Eric's AAA Special Vendor1
SM Test Mob62
Spirit of Minshina11
Morgan Ladimore1
Crekori Mudwater15
Pilot Wizzlecrank15
Mud Crawler15–16
Elder Barrens Giraffe22–23
Spirit Wolf1
Healing Stream Totem21
Temp Poisoning Vendor Dwarf20Poison Vendor
Temp Reagent Vendor Dwarf20Reagent Vendor
Cleansed Timberling7
Mana Spring Totem26
Riding Bat29
Praenus Raxxeus1Bat Handler
Stoneclaw Totem8
Invisibility Totem60
Aman50
Tortured Highborne Soul20
Kyln Longclaw1Boar Trainer
Nerra12Cat Trainer
Aelyssa35Spirit Healer
Myielea Starwhisper35Spirit Healer
Initiate Druid1
Druid of the Talon60
Druid of the Claw60
Druid of the Wild1
Rabid Ghostpaw1
Cenarion Steward1
Riding Hippogryph29
Voidlasher19–20
Anaya16
Shadowfang Bloodhowler19
Shadowfang Tainted One20

Classic reference data from QuestieDB (Forever data, commit c5de61a), with positions on Forever's zone maps. It doesn't confirm that an NPC, location, quest or item is in Forever.