Who makes them?
These games aren't published by Games Workshop themselves. Various companies have held the licenses over the years, including Green Ronin, Fantasy Flight Games, Black Industries, and Hogshead Publishing. But right now, things are pretty simple: Cubicle 7 currently holds the rights to all Warhammer TTRPGs, selling both their own new games as well as older games originally released by others.
Given the age-old connections between wargaming and TTRPGs, it should come as no surprise that there's lots of role playing to be done in the worlds of Warhammer.
