Art Bell was probably a sort of proto-Alex Jones, i.e. a controlled and managed outlet for parapolitical topics and a way to mix up the truth with a hefty dose of misinfo and shitcoating.

Mae Brussell's entire back catalog is easy to find if you're looking for something along these lines without the compromised elements. Dave Emory also has a massive library and is still going strong, doing great work on the origins of SARS-CoV-2 in particular. For modern-day parapolitical podcasts there's The Liminalist, Subliminal Jihad, The Farm, Psyop Cinema, and many others.