World War Z by Brooks and The Girl With all The Gifts by M.J. Carey are still, in my view, the only two really good zombienovels written. There are other that are good (jonathan Maberry comes to mind, better than Mira Grant that was included anyway)) but i havent found any that comes close to these two very different novels.
Other than that Simmons The Terror, also his Haunted House tale A Winter Haunting. Hills Nos4R2, McCammons Swan Song, Goldings Lord Of The Flies is a classic but if you havent read it, do so. One of the truly greats. Then i'm surprised Ghost Story by Straub wasn't even included. I'm not the man to ask about Koontz, he's never really impressed me, much less scared me but others love him so i'm not surprised he is included. Ketchums The Girl Next Door is good. Rebecca of course. Few books are as atmospheric as that one.Michael McDowells The Elementals is good. (he is often good). Also Let The Right One In by John Ajvide Lindqvist. One of the best modern Vampire novels. It shares first place with Kings Salems Lot. oh, and Atwoods A Handmaids Tale.
Then, There is a Lot of books here that i havent read and that sounds interesting. I'm probably most interested in getting hold of The House Next Door by Anne Rivers Seddons. If you havent read Shirley Jackson she is a must. The Haunting of Hill House is the best haunted house story i have ever read.