[jijijijij]

I think you would like the modern default Gnome desktop. Your needs in regard to search are built-in, except for the GPT stuff. In Gnome you can almost always just type away to navigate by search, without memorizing shortcuts. It's really great! There may be extensions for your "AI" needs, but I don't know for sure. However, Gnome is still sometimes limited by the development status of basic apps and services like mail, calendar and online accounts. Ironically, mostly affecting free standards like CalDAV, while Google Mail and Exchange integration is there. Also some common UI tweaks like having a dock, are hidden away as extensions.

Apple made it quite painful to share with iOS devices and access iCloud services outside the Apple ecosystem. So if you got an iPhone, that's gonna be mildly annoying.

I'd say try Fedora in a virtual machine and see for yourself!