I'm going to throw my hat in the ring for Pop_OS. The company that maintains it is focused almost exclusively on desktop use so it excels at this better than many other distros that have kind of a split focus on all the things. Their power manager is the best in terms of laptop battery management if you're using a laptop. The distro is also flatpak focused. There's even a utility in startup apps by default called "Flatpak Transition" which checks for deprecated deb packages and lets you know if there's a Flatpak that satisfies it.

Updates seem to come fast but not as fast as a full rolling release. No major changes lately because, as others note, they're working on a HUGE change to the distro to make their own DE. Rumors are circling this might come with a re-base of the distro off Ubuntu. Unfounded as far as I know but it would make a lot of sense.

I've been running Pop on my desktop and laptop exclusively for going on a couple years now. Rock solid.