Chicago95 theme for XFCE is great

Looks more legit than Redmond97.

If we go retro then I would go for a MacOS 9 look. Like what this user achieved: https://www.reddit.com/r/unixporn/comments/tsric2/xfce_color...

Beautiful results there!

Takes some tuning but Chicago95 can become a very convincing clone of early Windows GUI. Back when they did user research and every element had methology and reason behind it.

I don't think it's complete but I have that mostly set up with LXQT on NixOS on my Framework desktop. I love it