Every macOS comes with some standout desktops, one of the better sets was Abstract series but they're from a bygone pre-retina/4k/5k/8k world. I really loved 512 Pixel's Every Default macOS Wallpaper – in Glorious 6K Resolution post. If you haven't checked it out, you should. I've used them and loved it. Feeling inspired, I decided to do the same to one of my favorite set of Mac desktop backgrounds, the Abstract series from OS X 10.6 - Snow Leopard.
I upscaled and denoised (originals had some JPEG artifacting) and hand touched up them tediously in 16-bit P3 (dithered down to 8-bit P3 JPEGs). I had to make the tough calls on cropping so rather than live with my choices, I've included the 8k originals in the 16:10 aspect ratio for those with 16:10 displays or looking to crop the desktops as they see fit. There's 8 total desktops and I'll probably do an iPhone update and possibly light/dark updates for a few. For now, enjoy!
Every OS X (macOS) 10.6 Snow Leopard Nature Desktop - in Glorious 6k Resolution
Oh hey, I also converted all the nature background from 10.6 to 5k too, check it out here!