If you like LXQT, you may also interested in a similar DE called Lumina.
Lumina is based on Qt 5 (without QML) and Fluxbox window manager.
Lumina does not use any of the Linux-based desktop frameworks
(ConsoleKit, PolicyKit, D-Bus, systemd, etc..),
instead using a simple built-in interface layer
for communicating directly with the operating system.
It is available in the repository.