On Windows 11, the System Classic skin is a very light gray and uses Segoe UI. 95/98 uses a darker gray and Microsoft Sans Serif. 2000 uses a slightly lighter gray and Tahoma. ME uses the 2000 gray and Tahoma.
On Windows XP, the 95/98 theme was "Windows Classic", and the 2000 theme was "Windows Standard".
Or if you want a visual comparison of the original UIs, https://guidebookgallery.org/screenshots/running#win95
Even many Mac users copy aspects of it (put your Applications folder in your dock and you have a start menu/programs).
You could put anything you wanted in that folder, and it would show up in the Apple Menu. It was a good idea to put aliases to your most commonly-used apps in it. I remember doing that all the way up through Mac OS 9.
See also: A/B testing UIs to maximize arbitrary metrics
Combine the ease of making that argument with potential financial incentives to the designers to optimize for that, then you get relatively easy conformity to that goal. I'm sure there's plenty of designers that will happily accept it, so as a company, you can easily replace any designers that push back.
The world we could have had...
Consider early Google, when they infamously A/B tested 50 shades of blue for a button. Did that actually improve anything? Of course not.