For some reason they scare me most to the point even seeing pictures can give me an uneasy feeling and chills me to the bone no matter how old I get.
Some examples of said movies would be "The Grudge" and "The Ring" movies as the Americanized versions are horrible enough but I can manage to watch them (NOT ALONE) but when I looked up the legitimate Japanese versions I couldn't even watch the trailers.
The ghosts in said movies would be considered Yūrei which when I studied into them gave me chills.
So long story short my opinion goes towards the Japanese folklore based stories
Bonus note : for some reason I've been playing WWE 2k18 and creating horror based gimmicks for wrestlers male and female and currently working on a female wrestler based on Kuchisake On'na next I'mma work on possibly Samara Morgan from the Americanized Ring movie series.
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Sinister scared the crap out of me back when it came out in theaters. Love horror and never rewatched that one it was too scary for me haha.