Windows 11 for gaming PC, Windows 10 for work laptop, Mac OS for personal laptop and Fedora for my old laptop. Also using both Ubuntu and Rocky Linux for servers. Steam Deck is still on Steam OS, Pi's use Raspberry Pi OS (aka raspbian). I don't really have a 'main' computer as it mostly depends where I am and what I'm doing.
I'm pretty comfortable with any OS at this point, even on mobile devices (both Android and iOS/iPad OS). I'm not a big fan of Windows but it pays the bills working in IT. I was in the process of migrating servers away from Ubuntu and onto Rocky (rip CentOS) although with the recent changes in Red Hat Land... We'll see how the rest of the migration progresses.