No one asked for this. But here it is: every macOS wallpaper from Mac OS X 10.0 Cheetah to macOS 10.15 Catalina combined. I highly doubt that anyone will ever use this.

Changing your Mac's wallpaper is one of the quickest ways to personalize your computer and give your desktop a fresh look. Whether you want to use a favorite photo, one of Apple's built-in images ...