I've published the first report of "lookalike" feeds. This covers the backlog of the entire Index as it stands right now:

https://public.podcastindex.org/lookalike_feeds_backlog.html

In that page you will find a link to the CSV the data is based on. I will cover this more in the board meeting today. It's meant to help directories, hosting companies, creators, journalists, etc to spot early if someone has copied/cloned someone else's podcast. There will be a daily companion to this report.