I'm personally very interested in the US Civil War. B/c of that one of my favorite history podcasts is The Rogue Historian. He has lots of good interviews with people who study or work in the field. https://keithharrishistory.com/

I also really like The New Books Network history channel. It's a podcast with interviews of authors of academic books on history. There's a lot of content and not all of it is interesting. I don't listen to every podcast, I just focus on ones I think are interesting. But there is a huge amount of content. If it's too much you can focus on more specific types of history. https://newbooksnetwork.com/category/history-1/history

I've also recently started listening to History That Doesn't Suck: https://historythatdoesntsuck.com/

and Backstory: https://www.backstoryradio.org/

These are more general history podcasts for the everyday listener but they have interesting stuff.

I'd also recommend all of Mike Duncan's work and the wonderful BBC podcast In Our Times. In Our Times is especially fascinating and I think it's a great model of what good public media could provide to the public.

I also like Dan Carlin's Hardcore History. I will say that Dan focuses on narrative and he uses a lot of older texts that fall into the Great Man trope. That means his podcasts have a lot of bad information and a fairly limited historical viewpoint. But they are interesting to listen to. They're just a little too focused on war from an upper class white male perspective. Dan's getting better though and is starting to try and consider other viewpoints on the topic.