Mysteries and thrills but not horror?

Stephen King and Dean Koontz have made a good living writing horror stories. (The second’s tales are better than the first’s.) Other authors less so. (Maybe not so good a living but still some quality stories in that genre?) All their stories are probably better categorized to be a subgenre of fantasy and not sci-fi.

Mystery and thriller stories do a better job of capturing the actual horror of real life, though. What could be more horrible than a school shooting? Or Putin’s war in Ukraine? Or 9...