The 8-bit Guy, previously The iBookGuy, has an enormous amount of retro-tech information, including a whole series about the Commodore line of computers. And he developed his own game for various Commodore systems (and also an MS-DOS game).
A little bit about him: https://www.the8bitguy.com/8bit-guy-about/
Great content, well-presented, and regularly produced videos. I find I look forward to his videos every month.