@acarson @weirdwriter Never used it but here’s an Apple Shortcut someone created to export your Apple Podcasts Library to an opml file.

When you’ve added it to Shortcuts, tap its icon to run the shortcut. On iOS it’ll display a folder in the Files app so that you can select the location where you want to save the opml export. Once you’ve done that open the Files app itself at that folder and you’ll see a file called ApplePodcasts saved there for use for importing.