The Wikipedia list seems to encompass most of the podcasts I can listen to, perhaps with the exception of something like This American Life, since it’s technically a documentary podcast, but it can also be thought of as an educational podcast or an interview podcast. The most popular genres are probably relate to pop culture, such as music, comedy, tv or movies. My podcast preferences don’t really line up. I always like to learn things as I’m listening (unless if I’m listening to Conan Needs a Friend). My favorites are Criminal, Dan Carlin’s Hardcore History, 99% Invisible, and Conan Needs a Friend. It’s largely about society and culture, with some true crime mixed in there, so I donwouldn’t be a mainstream listener. Also, since I my podcast topics are kind of broad, I wouldn’t consider myself an avid fan of most topics, either. The only exception would be True Crime, where I really like listening to murder mysteries/supernatural stuff/unsolved stuff.

Kitchen Sisters would be considered history, Radio Ambulate would be considered culture, Reply All would be consdered technology, and This American Life would be considered documentary, or maybe society/culture.