Old gods of Appalachia is pretty cool.
Podcasts
A place for all podcast lovers to come together and discuss the medium, find recommendations and talk about podcasts they have created.
Lore might be a good candidate - one narrator relaying stories from history that are dark or spooky in one way or another. It's quite fun and well-produced.
Be warned that he approaches history from a folklore standpoint and will sort of tell you the spooky story version of what happened and how it impacts modern day pop culture - so if you compare one of his (fairly short) episodes on a well-docunented famous murder or something to a deep-dive series or book on the subject it will be missing information.
If you're looking exclusively for fiction, I love HorrorBabble. Classic and modern horror stories read by two great readers.
If you're interested in supposedly true stories, I like the Paranormal Mysteries podcast, it's usually ghosts/aliens/cryptid/weird occurrences stories written in by the audience. With anything that's written in, they can be hit or miss but I generally like it.
I only know one, but it's great: The Magnus Archives. Maybe you should list some you already know and like.
The NoSleep Podcast tells original anthology style horror stories. Originally began from the NoSleep subreddit, but now accepts submissions directly and pays their authors.
https://www.thenosleeppodcast.com/new-to-the-nosleep-podcast
The White Vault!