Avram Davidson was, unique. And that’s a cliche in his case!
Fortunately, there is a podcast (operated by his godson, Seth Davis) called “Avram Davidson Universe” where this award-winning writer of fantasy, science fiction and mystery (and winner of multiple awards in those fields!) is regularly discussed and read. https://www.buzzsprout.com/1310005/9238712.
Rob Lopresti appears in the above episode and posted an interview with Davis on Sleuth Sayers, November 3, 2021.https://www.sleuthsayers.org/2021/11/welcome-to-avram-davidsons-universe.html.
Davidson’s (1923-1993) stories and novels are readily available. There is The Avram Davidson Treasury, for openers.
I’ve been a fan of Davidson’s for decades and I will recommend anything he wrote. Start with the fantasy. No, start with the mysteries. No, start with the science fiction. No, wait…