I’m quite happy with Fedora. It has kde support, many apps (especially with rpmfusion), and is quite stable because it is still a 6 month ish major release schedule. Wobbly windows, kde connect, and krunnuer will definitely work. Good customization is subjective, and honestly I consider c/unixporn to be weird but cool wizardry, but I’m happy with it. One thing to consider is if you have a newer amd CPU with an iGPU being used it will get slow and crash every now and then (few months). It’s a bug in the linux kernel starting around 6.10.
Yeah, that’s a kde thing, so I doubt it would be very different than neon.