Well Here are the Links for the three of them:
For MacOS-Like Screenshot:
Another user once asked for ZorinOS-16 Pro Wallpaper. So that's where this Link will take you to...
For Gnome-Like ScreenShot:
I Just viewed a YouTube Video and took that Wallpaper from it's description. Here's the YouTube Video Link.
And For Windows Like...Just Google for Fluent-Gtk-Theme.
Glad to hear that you Liked my Desktop Customizations...