Dan Carlin's Hardcore History, Revolutions + History of Rome, Land of Desire (a remarkably talented hobbyist show on French history), Patrick Wyman's Tides of History which is wrapping up soon after about a billion episodes, American History Tellers, History of India... there's a show for everything, but I think you have to try a few to get a feel for how granular you like and what sort of style calls to you.
And I find podcasts gradually lead me towards books. It's just harder to read a book while walking my dog.
I work on this with my wife at https://www.youtube.com/@ondineequine who does the hard work of being in front of the camera and training the horse. It's called liberty and it's the amazing art of connecting, training and playing with horses without riding them.