The Linux Experiment - Making the Linux desktop accessible: no techno lingo, no command line voodoo, no super technical content.
Egee - Informative and entertaining videos about Open Source Software, Gaming, and other loosely related things.
Bryan Lunduke - Bryan Lunduke is a former Software Developer, former Software Tester, Vice President, former Linux marketing guy, former writer for Network World, former openSUSE Board Member, and a long forum Linux discussion host on YouTube.
Luke Smith - Everything you're looking for is here: http://lukesmith.xyz
Chris Titus Tech - The channel focus is spread into 3 categories that I specialize in.
DistroTube - DistroTube channel primarily produces content showcasing the latest releases of Linux distros, their desktop environments, and well as their apps.