You will have to submit to XFCE, I have it as a spare when I feel nostalgic from my daily DE (KVM).
- XFWM4 (has both 1.3 and 3.0)
- GTK2 which sadly is just GTK2.
- Either This or This
- Mice:
- Fonts or Topaz Nerd font
- Wallpapers (Though I don't use them)
- SDDM (There are several available)
Icons are.. hard to accomplish:
There are a couple of png libraries out there, so it is possible to recreate either the 3.5 or posterior looks, however the older workbench with its lovely drawers and different sized icons is something I haven't achieved.
You can still pick a modern DE, add png icons to the desktop and recreate something like this without the filesystem navigation (or prefs):

(I found interesting the lower bar with the nextstep-like icons, though this was on 1994 so..)