It’s not too late to kick off a Halloween horror movie binge-watch. And to get you started, the website 24/7 Temp has come up with a list of the Best Horror Movies of All time. Their list gives top honors to Alfred Hitchcock's classic "Psycho," followed by "Alien," "Bride of Frankenstein" and "The Shining."
… To determine the best horror movies of all time, 24/7 Tempo created an index based on each film’s Rotten Tomatoes average critic rating, Rotten Tomatoes average audience rating, and Internet Movie Database average user rating. To be considered, each film needed to have at least 10,000 total user votes between IMDb and Rotten Tomatoes, as well as 10 approved Tomatometer critic reviews and be categorized as “horror” on IMDb as of October 5, 2019.
Among the movies that I think should be higher on the list: "Texas Chainsaw Massacre," from 1974, is great horror and done without any blood. This is a family you don't want to have dinner with. They listed this at #42. Nope, higher. And did you ever see the remake of "Invasion of the Body Snatchers" with Donald Sutherland. Again, no blood, but wow is this creepy and the ending will scare the bejesus out of you (much better than the original 1956 version).
To see the whole list Full list of 50.