Loved the series thought the movie was ok. If you don't mind vulgarity Michael Imperiolli and Steve Schrippa just finished their Talking Sopranos podcast not to long ago. They do a deep dive into each episode and interview many people involved with the show.
https://www.espn.com/xfl/story/_/id/29588303/dwayne-rock-johnson-investor-group-agree-buy-xfl-15m
Dwayne The Rock Johnson and an investment group buys the XFL for 15 million.