brent  ...  same with the open/closed chrome parts of Brave, Vivaldi, Edge, etc & all the derivatives ...
All that it means for a Chromium-based browser to be "ungoogled" is that the browser has been disconnected from the Google ecosystem (background requests/reports to Google, code for Google web services, and so on are removed) to one extent or another.
  
Different Chromium-based browsers "ungoogle" to different extents (Google Chrome, of course, is fully "googled" and then some, Microsoft as fully "ungoogled" as Microsoft can manage), and I don't pretend to have enough knowledge to compare and contrast the differences between alternatives like Vivaldi and so on.
I use Edge (Windows and Ubuntu Budgie) and Firefox (Solus).  I use as little of the Google ecosystem as possible.
 
The reason that I try to stay as far away from the Google ecosystem as possible, but don't have a problem with integration into the Microsoft ecosystem is, that the two companies have very different business models.  Microsoft is in the business of selling Microsoft services, which I can elect to use or not (mostly not in my case).  Google is in the business of data mining and selling data, which I cannot avoid if I am attached to the Google ecosystem.