I still use Open Shell, formerly Classic Shell
I've been forced to use Windows as far is W10. W2k was peak Windows GUI. W7 was usable, but I was already using utilities to get around the crapiness creep.
Nowadays, on getting a new PC, one of the first things I install is Open Shell and set it as close as possible to W2k UI.
The second thing I install is Taskbar Tweaker.
The third thing I install is Ribbon disabler. Don't get me started on the ribbon. Who the F'K ever thought that's a good idea??? I watch colleagues who've been using it for years, frequently searching for features and clicking the wrong icons.
The fourth installation is generally Libreoffice, depending on the purpose of the particular PC.
Why doesn't MS just let us use whatever GUI shell WE want? Why don't they let US control our OWN PCs? Forced updates in W10 are the work of the devil, forcing me to periodically re-disable the ribbon, etc.
I use Linux for all personal stuff. Personally I think the Linux Mint UI is the cleanest and easiest to use.