UKUI - UKUI is a lightweight desktop environment based on pluggable framework for Linux and other Unix-like Distributions.
Xfce - Xfce is a lightweight desktop environment for UNIX-like operating systems. It aims to be fast and low on system resources, while still being visually appealing and user friendly.
Fedora - Fedora creates an innovative, free, and open source platform for hardware, clouds, and containers that enables software developers and community members to build tailored solutions for their users.
LXDE - Why will you like it? Less resource needs. You can use it on your less-pricey embedded board or salvaged computer. Component-based design. Don't want something in LXDE, or you don't want to use LXDE but only part of it?
GnomePanel - GnomePanel is a highly configurable launcher and taskbar for GNOME.
KDE Plasma Desktop - Plasma Workspaces is the umbrella term for all graphical environments provided by KDE.