Overall my favorite is ABetterWay2A. It’s a podcast about gun culture, with an aim (ha!) towards making it more inclusive for people that are not right wing, christian, etc. Most guests are left-leaning, the remainder are fairly far left. In the same vein, the Guns Guide to Liberals is a good podcast about gun owners trying to bridge the gap with traditional liberals (“liberals” in the US sense) that don’t believe in an individual 2A right. It ended after two seasons, because the owners got too busy with their business to continue. The Tiger Bloc is an irregular podcast by Yellow Peril Tactical; yes, they know what Yellow Peril means, because they’re all Asian. They’re also definitely leftists. Practical Shooting After Dark is about getting better at shooting; it’s largely a podcast about how to practice. It’s mostly a-political from what I’ve heard so far. It’s put on by Ben Stoeger who was a USPSA Grand Master
Mormon Stories. It’s about deconstructing religion in general, and leaving the Mormon cult specifically. It’s one of the longest-running podcasts; it’s currently sitting at 1800 episodes, with most being in the 2.5-3 hour range.
FiveThirtyEight Politics. It’s non-partisan politics; news, analysis, and polling.
Dan Carlin’s Hardcore History. Deep dives on subjects. Supposedly he’s not always accurate, but I also haven’t heard specific criticisms. The podcast is wildly irregular - 6-11 month gaps between episodes - since episodes are pretty heavily researched, and typically run 5+ hours each.
Behind the Bastards. Do you want to be depressed about how the world is, and always will be shitty, and yet entertained at the same time? This is your podcast. I will say that the episode on Dr. Mengele was considerably less awful than I expected it to be; apparently some of the worst stories about Mengele were fabrications.
The Friendly Atheist. News and commentary about church-state separation. You’ll either love Jess–the co-host–or hate her, there is no in-between. Hemant Mehta generally has pretty good critiques, and is usually very reasonable and measured in his approach. The ads are getting really jarring though.