I recently discovered this podcast - The Moment with Brian Koppelman. I've been listening on my morning dog walks and find each episode so far to be interesting, educational, and insightful on the topic of creativity. Brian Koppelman is a writer, showrunner and hobbyist songwriter. Lots of interviews with songwriters/musicians as well as other creative types (screenwriters, authors, spiritual leaders, actors). There are a bunch of episodes so I've only scratched the surface - so far I've listened to: Mary Gauthier, Rodney Crowell, Rick Rubin, Margo Price, Liz Phair, Darrell Scott, Aimee Mann. Every episode has been interesting, insightful and inspirational.
Next episodes on my list: Jason Isbell, Suzanne Vega, Steve Earl, Elvis Costello, Rosanne Cash, Bob Mould, Amanda Shires, Brandy Clark, Shane McAnally, Robbie Robertson, Geddy Lee, Todd Rungren, Paul Williams, Jakob Dylan.
Just listened to the Rick Rubin episode and discovered that he has a podcast as well, that I'm sure is fantastic, called Broken Record with Rick Rubin. I'll have to dive into that one too.