Those weren't malware and in fact you already knew they were displayed in the notification area, so that should have been your clue that these were simply notifications that you likely allowed when a popup requested your permission to send them in the future.
Another clue is the highlighted option to "Manage Notifications" that is clearly displayed in the upper right corner of each of those snapshots you provided, since that should have taken you to the same set of app notifications discussed on the following page that describes these action center settings in the Windows 10 Settings app.
Change notification settings in Windows 10
I went to that page URL for elevationmap . net you provided and though I didn't receive the typical popup to "allow", my much more strict security and privacy settings in the Microsoft Edge browser was apparently blocking these, since it indicated that popup notifications had been blocked in the browser address section.
If you wish, you may also set the same option in the Edge browser; Settings - Privacy, search, and services - changing the default Balanced selection to Strict as I have done. Though this setting may also block some items you might prefer to allow, it's functionally almost the same as installing an ad blocker extension, since it doesn't allow most websites to even request things like displaying notifications as I mentioned above.
The other option is to simply be much more careful with how you answer or respond to any popup requests from Windows in the future, since as in this case how you respond can have significant effects on how your computer operates.
Rob