Stuff You Should Know is a podcast by some well-meaning, curious, kind of dumb dudes from Atlanta. Libs but that doesn't seem to be a disqualifier. Anyways they have very gentle and calm voices and basically have done a straight up book report-style podcast for like fifteen years and have done basically every topic.

They have the right voices to fall asleep to because they never get so excited they change their register and seem to like each other. Kind, friendly energy. It's also easy to fall asleep to because you don't have to hang on every word because they usually don't really know too much about what they're talking about so it never really matters if you hear the next part because you'd have to fact check it anyways