I once knew a site that could detect and list ALL the used trackers and cross-site cookies and other stuff of any site.
You just had to input the site name and it scanned it for you.
Now I can’t find it. No site can actually list the trackers for me to examine.
DuckDuckGo browser will block and list trackers and third party requests. I use it on iOS and there’s a desktop app as well. Not sure about android though.