I only signed up to Bing Webmaster Tools when investigating why the company site did so poorly in Bing and Duck Duck Go—we now know it was nothing to do with us, and everything to do with a search engine basically disintegrating before our very eyes.
This, too, was interesting, from a screenshot dated July 20, 2022. I never added these sitemaps, and they all pre-date when I signed up to Webmaster Tools. They were all there when I went to the tools for lucire.com. They are not RSS feeds we’ve ever sanctioned, though of course someone could have created them intentionally to follow a subject. Maybe someone at Microsoft?
You may notice the number of pages: 51. These 51, however, have no real bearing on the 50-odd that Bing can display before it craps out.
I’ve since added sitemaps for the rest of the site, to no avail, natch.
Anyone else find weird sitemap files in their account after signing up?