I have no association with this, but it seems that with the digital version of Blades in the Dark being ~$20, this seems like a good deal at $14.95 even if you don’t want the extras that come with it.
I haven’t used it, but there’s also Mythic Table that kickstartered spring 2021.
I finished Psychonauts for the first time a couple of months ago, and just started Psychonauts 2 last night. Only a couple of hours in, but really enjoying it so far.
Not sure if this is the kind of thing you were looking for, but Cthulhu Eternal has some resources. It’s a different system (based of delta green engine I believe), but should be easy to convert.
https://cthulhueternal.com/our-resources/