I created a nice list which may interest anyone looking for contents related to engineering, basics of electronics, robots, programming languages and so on. There is no clear order, but most channels were suggested by community members or were found thanks to the 1 billion minutes I spent on watching videos and learning all by myself.
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/blog/show/youtubers-in-robotic-and-electronic