3 red squares icon next to a website in settings?

in safari, under [safari>settings>privacy>private browsing>manage website data, it contains all the websites that are tracking you and how, but I just stumbled across one site, bbc.com, that has an icon containing 3 red squares next to it, where all the others have a standard internet globe next to them. what does this mean?

*edit: upon further investigation, some of the other more known sites have their own proprietary icon next to them, but not just have the monochrome globe next to them, even some of the more major ones. so im guessing this icon is maybe bbc.com's logo, but I still need verification that its not a warning sign. see attached screenshot.

im afraid to go to the site, with as many trackers as this site employs, including local storage....