I think that Castle Rock makes Stand by Me, The Dark Half, and Needful Things probably non-canon due to Alan Pangborn and Ace Merrill. Even Misery, which I've included at the moment, is questionable by it's very nature.
https://bleedingcool.com/tv/the-road-to-castle-rock-season-2-paul-sparks-matthew-alan-talk-merrill-family-kings-universe-more-bc-interview/
Around 9 minutes into the interview, they say that Ace Merrill in Castle Rock is essentially supposed to be what the audience would expect him to be decades...
https://www.thecomicboard.com/threads/stephen-king-movie-universe-timeline.15505/
As I said, I'd do it. Might regret it, might love it and commit, haven't fully decided.
I just wish the connections between everything was more solid. Christine is canon to both Castle Rock and Cat's Eye, but we...
This is the timeline for the loosely connected shared universe of Stephen King movies and shows.
Alternate List
https://www.thecomicboard.com/threads/stephen-king-multiverse-headcanon-multiverse-timelines-by-iceman109.15473/
Connections
Cat's Eye
Cujo and Christine have cameos. Pet Sematary is...
I think I'd just trust this and add them. I know it creates small continuity issues with Cujo, but at the same time, Castle Rock has small problems with 'Salem's Lot and IT with regards to the Marsten house despite them connecting to The Shining. I think it's fine, I mean, it's clearly the same...
CZ's World claims that the picture of Cujo in Pet Sematary (1989) is from the 1983 movie. If so, that logically puts Cujo, Christine (?), Cat's Eye and Pet Semetery in the same continuity.
Funny enough, that would make Pet Sematary in-universe fiction written by Stephen King while also being a...