Not exactly a podcast (and maybe not even little-known) -- but I found this article by @rahulvohra on Product Market fit very interesting and insightful (also has an audio clip narrating the whole thing) -- https://firstround.com/review/ho...
Here a few of my favorite start-up/marketing/growth related podcasts:
20 - 30-minute:
🎙️ Confessions of a B2B Marketer by Tom Hunt
🎙️ The GrowthTLDR by Kieran Flanagan VP Marketing at HubSpot
🎙️ Growth Lessons by Kieran Ball
🎙️ Growth Marketing Toolbox
🎙️ Everyone Hates Marketers by Louis Grenier
🎙️ I Love Marketing by Dean Jackson
🎙️ Churn.FM by Andrew Michael
🎙️ Indie Hackers https://www.indiehackers.com/pod...
For quick hits of marketing adrenaline (7-10 minutes):
🎙️ Marketing School by Eric Siu & Neil Patel
🧠 Definitely Indie Hackers by @csallen
🧠 For e-commerce related businesses - The Ecommerce Marketing Show by @davegerhardt
🧠 Noah Kagan Presents by @noahkagan has great business insights all the time
🧠 The Futur by Chris Do has great episodes on branding (especially recommend #073 with Marty Neumeier)
I'm not a major podcast listener, but I got some pretty good book recommendations lately, so I'll share them: Disciplined Entrepreneurship, The Mum Test, The Lean Startup, Tipping Point, Venture Deals.