Me and some friends who love the game are working on a D:OS 2 wiki @ Orcz:

Divinity Original Sin 2 Wiki

It's going to be very detailed and have all NPCs, locations, as well as strategy guide etc.

Still a work in progres but check out some sample pages: (SPOILERS obviously)

Fara (NPC page)

Every Mother's Nightmare (Quest page)

Fort Joy (Location category)

Also feel free to add stuff and help!