Ubuntu Linux comes in a few officially recognized flavors, as well as several derivative distributions. The recognized flavors are:
Kubuntu – Ubuntu with the KDE desktop
Lubuntu – Ubuntu with the LXDE desktop
Mythbuntu – Ubuntu MythTV
Ubuntu Budgie – Ubuntu with the Budgie desktop
Xubuntu – Ubuntu with Xfce
A bit more about each option at https://www.linux.com/learn/intro-to-linux/2017/5/which-official-ubuntu-flavor-best-you 
Which Official Ubuntu Flavor Is Best for You? | Linux.com | The source for Linux information
Ubuntu Linux comes in a few officially recognized flavors, as well as several derivative distributions. The recognized flavors are: Kubuntu – Ubuntu with the KDE desktop Lubuntu – Ubuntu with the LXDE desktop Mythbuntu – Ubuntu MythTV