checking websites using
https://themarkup.org/blacklight
if you do see results like one i found for Feedly RSS service
you can then open the website you checked and then open Privacy badger and see if the badger has blocked it or not
another tip for cookies
i use > Cookie AutoDelete
it gives you more power over what cookies and site data you might wanna get rid off
example: i have it set to clean cookies and site data/settings after i close tabs < 30 secs after i close a tab the extension will clean all for me
https://chrome.google.com/webstore/detail/cookie-autodelete/fhcgjolkccmbidfldomjliifgaodjagh
you can also add sites to lists called expressions
on chromebook adding certain sites to 1 list will wipe all site cookies and data only when i switch chromebook off via power button < windows after you close chrome browser
or
the other list that will keep cookies and site data forever
https://github.com/Cookie-AutoDelete/Cookie-AutoDelete/wiki/Documentation#enter-expression
recommended reading:
I Scanned the Websites I Visit with Blacklight, and It’s Horrifying.
Now What?
https://themarkup.org/ask-the-markup/2020/09/22/i-scanned-the-websites-i-visit-with-blacklight-and-its-horrifying-now-what