Favourite RPG Publisher...
I don't have one but that's mostly down to me not following any particular publisher (or author or artist but we'll come to that).
Default would be Wizards Of The Coast but that's be down to the quality of output they've had so far with Dungeons & Dragons 5th Edition.
Alternatively I could opt for Fantasy Flight Games but that'd be down to their Star Wars RPG line so not really highlighting them as a favourite publisher.
Or again alternatively I could opt for Pinnacle as they make Savage Worlds which is a great pick up RPG and they also publish some great settings for that too.
But then I could probably list a whole raft of other publishers.
So yeah, I don't have one.