If you, like so many of us, have gone through the entire NoSleep catalogue & now worry that your life will have no meaning - rejoice! For countless other horror fiction podcasts exist, & a couple of them are really, really good. To help you separate the wheat from the chaff, so to speak, here are my current faves. In order from 'yeah, this one's solid' to 'Jesus H that's scary.'
Tales to Terrify
This show has been around since 2012, faithfully churning out weekly episodes, even after the death of host Lawrence Santoro. The classics are well represented here; Santoro's expert narration of H.P. Lovecraft's "The Colour Out of Space" is a particular standout. While some listeners might find the excess host chatter off-putting, it came to feel like a weekly visit to a friend's house to hear stories told by the fire.
Nightmare Magazine
This podcast, & the magazine that spawned it, has fast become my go-to for the more experimental side of horror fiction. The stories are expertly curated, the editors giving voice to some of the best international, queer & POC writers around.
Knifepoint Horror
You want to creep yourself out good? Sit down somewhere dark & quiet, preferably outdoors, & put on an episode of Knifepoint Horror. Any ol' episode will do - these stories are uniformly great. Perhaps that's because they're all written by the same person. While tragically not prolific, Soren Narnia crafts some of the most starkly chilling stories I've ever heard, & the narration feels like someone is whispering dark secrets into your ear. When the odd new episode is dropped it's like a national holiday at my house.
Those are my faves, but there are lots of horror fiction podcasts worth your time -Pseudopod, Chilling Tales for Dark Nights & The Simply Scary Podcast, among many others. Like Levar Burton said, you don't have to take my word for it. Check them out yourself. And sleep tight...