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Loved Hereditary. Thought Midsommar was good but not original Wicker Man good. Preferred The VVitch to both
Hereditary is not really a traditional horror movie, which is why it makes a poor comparison. It's a drama movie with horror elements. As a drama, it's incredibly compelling. And the horror elements really stand out when you approach it that way. 
The son accidentally decapitating his sister? The entire family swallowing fault and guilt because no one feels they can assert blame? The overarching heaviness of mental illness being an inherited disease that no one can cope with? That's all what makes it good. >

This is a good way to phrase it. I think I went in expecting it to be scary because people framed it as this crazy horror movie, when it isn't. I still loved it, but wish I hadn't gone in with the wrong expectations >

Horror movies do not always equal scary in my book. I'm not easily scared so that aspect is not what I look for in horror. I look to be disturbed, and have my frame of perspective entirely turned on its head. Jumpscares are unimportant. Fun sometimes but in general not what I go looking for in good horror.