@TeamYouTube is there any way to access channel membership data on mobile? I'm not finding it. It keeps trying to redirect me to YouTube Studio
Not at the moment. You can access the Channel Membership data thru a desktop computer–YouTube Studio app doesn't have the option to do so as well, but we'll continue to add more features in the future. In the meantime, you can send your feedback here: https://yt.be/help/feedback