Dr. Death is a fascinating short podcast series about an incompetent/murderous neurosurgeon.
Stuff You Should Know is one of my favourites; the hosts pick a different subject each episode and just tell you about it. Huge range of subjects, from Charles Manson to one hit wonders. There's over 1000 episodes so you can just scroll through and pick whatever sounds interesting.
Oh No Ross and Carrie - the hosts try to get involved in different cults/fads/scams and report back
By the Book - two women live by a different self-help book each week
Behind the Bastards - pretty full-on to listen to, but really well researched podcast about... bastards, funnily enough. Hitler, L. Ron Hubbard, Jeffrey Epstein, that sort of thing
Judge John Hodgman - John Hodgman (an American humorist, if you haven't heard of him) acts as a judge for lighthearted domestic disputes. My favourite one!
If you have a favourite tv show there might be a podcast about that too - for example, I'm Listening is a great Frasier podcast, and there are 'official' ones for Better Call Saul and The Good Place that are really interesting to listen to.
Oh, one more (yes, I do listen to too many podcasts):
You Must Remember This, a collection of short series about different aspects of early Hollywood, including some true crime stuff. She did a series in November about Disney's Song of the South and it is fascinating; one seriously effed up film.
I find the podcaster's voice quite hard to listen to, but if your app has a setting to speed up her voice a little it's fine.
