Takes the JSON file generated by my gallery scraper here: https://openuserjs.org/scripts/Artex/FA_Gallery_Scraper and searches for artwork you favorited by artists not on your watch list. Handy for finding artists you forgot to watch or checking up on artists who had drawn something you liked, but the rest of the gallery didn't warrant a watch at the time.
To use navigate to your watch list and open the saved json file with the file input at the top. I may merge this with the gallery scraper later.
Oh, also if your watching more than 1,000 artists you'll only get the first page. Just me being lazy. You should still be able to run it on each page.