This is fascinating to me, because you just said you can't see it, but also that there are "trackers from multiple big corporations". Can you tell me what those are?

I ask primarily because we explicitly don't use any trackers, to a degree I actually pride myself on running a website that doesn't contact anything else: https://mini.xkeeper.net/private/C58L77azpY.png

The sole exceptions are YouTube embeds, afaik. I even switched out the MediaWiki and CC badges to be local.