One neat thing that most modern podcast hosts have added to the analytics you have on your podcast is what devices or players people listen to your podcast on.
Change the volume and output device for individual apps. Adjust your Mac's audio device settings and levels instantly, from anywhere. Even apply built-in and third-party audio effects to any audio on your Mac
How to Find Your Podcast in Google Podcasts New Portal
Why would you want to create a private podcast? And how do you create private podcasts?