@Tafkae

City Watch

Keepers of law and order in Waterdeep.

Dungsweeper's Guild

The unsung heroes in charge of Waterdeep's public sanitation.

Guilds of Waterdeep

There are so fucking many, you guys,

Harpers

"One can never have too much information."

House of the Dark Blade

Bad guys.

[ Insert party name here ]

The PCs.

Knights of the Order

Knights who selflessly serve any of a number of causes - religious, civic, or professional.

Lords' Council

The Masked Lords of Waterdeep.

Magisters' Guild

Organization that monitors and handles all things magical in Waterdeep. All magic-users within the city are required to register with a Guild office.

Overpass

Scriveners', Scribes', and Clerks' Guild

Keepers of contract and record.

The White Sanctuary

A group we know so little about that I'm not even totally sure it's a group.

Xanathar Guild

Kidnappers with some kind of ties to the Underdark. Their logo is in the shape of a sunburst.

Zhentarim

Criminal underworld. Their logo is in the shape of a winged snake.