I can't believe it!
I was once again lamenting the exhausting task of going through my to reads on goodreads and then cross referencing against the Libby app. Reddit to the rescue! There's a chrome extension!
This was a scan of my last 200 to reads, and there's only 3 audiobooks available. good to know!
If you're interested:
https://chromewebstore.google.com/detail/library-scan-overdrive-+/mfckggnkebdpao...