There are many lists out there of sites that are considered unreliable. It is very difficult to manage these types of lists and the owners frequently run out of steam and let them fade off. Some of the best ones out there have not been updated since 2016.
These sites have lists of unreliable sites but pay attention to their update date. There is probably a lot of missing information. New sites pop up every day.
https://www.snopes.com/news/2016/01/14/fake-news-sites/
https://en.wikipedia.org/wiki/List_of_fake_news_websites
https://docs.google.com/document/d/10eA5-mCZLSS4MQY5QGb5ewC3VAL6pLkT53V_81ZyitM/preview
