By skyforbes https://ubuntu.com/blog/ubuntu-desktop-charting-a-course-for-the-future
Ubuntu Desktop has more than 6 million monthly active users (based on devices checking for desktop-specific updates and not including those behind a corporate firewall or proxy).
Ubuntu Desktop is by far the most popular Linux distribution for developers (~27% in the 2023 Stack Overflow developer survey).
Ubuntu Desktop is the most used desktop Linux distribution for gaming (when you include older LTS and interim releases grouped inside the ‘Other category’ on the Steam hardware survey).
Now if they'd only make KDE their default desktop.