Personal recommendations of good podcasts that are 95-100% content (<5% ads, waffling, etc):

- Accidental Tech Podcast: Apple-related stuff. https://atp.fm

- The Sajin: photography in Korea. https://www.buzzsprout.com/1324087

- Skeptics Guide to the Universe: scientific skepticism and related topics. https://www.theskepticsguide.org/podcasts

Podcasts that I would listen to more if they weren't filled with ads and "waffle":

- Tim Ferris show: like a more intellectual Joe Rogan. https://tim.blog/podcast/

- Huberman Lab: (he gets a pass since the advertising is all front-loaded, and no "waffle") https://hubermanlab.com/welcome-to-the-huberman-lab-podcast/