Personally I have been using this one https://getwallpapers.com/wallpaper/full/e/3/d/1515937-dark-windows-10-wallpaper-2560x1920-windows-10.jpg
Personally I have been using this one https://getwallpapers.com/wallpaper/full/e/3/d/1515937-dark-windows-10-wallpaper-2560x1920-windows-10.jpg
I have been switching around a bit, but this is the current one. It is Disco Elysium fan art.