Pop!_OS is what I keep falling back to. It helps that I use a System76 Thelio and a HP Dev One.

iPhone here.

Even though I use Linux on my laptops/desktop I feel as if the ancillary Apple ecosystem cannot be beat. I use the Apple TV along with it and it just works too well and without ads. Not to mention the Apple Watch

I also have my diabetic equipment paired to it. My insulin pump and glucose monitor work with my phone. (Only supported on iPhone atm)

There is a community KDE spin in the works, with a more up to date plasma experience. https://fosstodon.org/@pop_os_kde_spin