One of the most noticeable aspects of cinema that came out of the last decade was that the horror genre had seriously picked up its game. With auteurs such as Ari Aster, Robert Eggers, Jennifer Kent and Jordan Peele leading the way into perhaps a new golden era of terror. However over the years, some of the greatest filmmakers of all time have made an indelible impact into the world of horror by producing some of the finest films not only in the genre, but also in the history of cinema itself.
Out of fairness, I have decided to leave out Hitchcock's Psycho, Kubrick's Shining, Spielberg's Jaws and Scott's Alien simply because their vast influence has already been noted and written about to the point of oversaturation. That is why I have made the decision to include films that while they are still classics, have either been unfairly judged alongside the previously mentioned masterpieces or for some reason or another, have simply not been viewed as much by mainstream audiences.