The Silt Verses - A fantasy horror podcast where gods are real, spawned solely through belief, feed on sacrifices (usually human), and have been corporatized. It's amazing and the series just recently finished so there's no waiting for the next episode to drop. Easily the best podcast I've ever listened to.
Sawbones - An awsome medical history podcast by Justin and Dr. Sydnee McElroy. Sydnees part is pretty obvious, she's a family medicine doctor and she researches and presents historical bits about all the ways we have tried to do medicine throughout history. Justin is just Justin, he's a podcaster and games journalist by trade so he's mainly there as a layman and as comedic support.
The Magnus Protocol - Fantasy horor that I'm having trouble expplaining but it's damn good. It's made by the same creators that did the magnus archives. When they announced it on kickstarter after the magnus archives was finished they quickly earned over $700,000 so that should be some indication of how much people liked the magnus archives and the budget for the show.