Not to side track the current discussion, but...
I have not yet seen anyone discuss the potential of "Stephen King" coming specifically as an addition to the "World of Monsters" section which has been rumored.
Stephen King has had huge name recognition for himself and his IPs, with decades of popularity and likely decades more. He and his stories have had a sort of resurgence of recent popularity, with It being a huge box office success (#1 R rated movie of all time, 700 million worldwide), Castle Rock being a successful show, and has more in the pipeline (Pet Semetary, IT Chapter Two, Castle Rock Season 2, Tommyknockers (made by Universal)).
The ride could center around King's "monsters" in order to align with the theme of the land. Potential IPs used for the ride could include: The Mist, Pet Semetary, IT, and The Shining. (I'm sure there's more which could work for a ride, I just haven't read or watched all of his work.)
Note that there had been a Stephen King ride planned, but according to what I've seen online, they deemed it too scary and went with MIB instead in 2000. But a lot has changed since then, with Universal not being shy to use violent and scary themes (notably The Mummy). And the Stephen King ride wouldn't need to go to the extreme... it wouldn't have to feature an elevator opening with blood pouring out. Instead, Pet Semetary and Shining if could feature spooky ghosts/ghouls similar to that of The Haunted Mansion or The Tower of Terror. Creatures from The Mist could be featured similar to Skull Island. Aside from Pennywise from IT (where it's hard to get around the fact that he's a clown, and some people are just terrified of clowns), the ride could be easily created without pushing it past a fear level set by The Mummy or The Tower of Terror.