It's funny, I certainly enjoy raocow playing smw hacks, ASMT and :P :P :P are both wonderful. They're absolutely what he plays most frequently, but my favorite two series from him are An Untitled Story, which is a freeware metroidvania type of game that I highly recommend, and Super Mario World 2+, a yoshi's island hack. Side note, if you ever want a playlist, check out this video and channel. Extra credits is harder to recommend a video for. Honestly just jump in to something that seems neat and fall down the rabbit hole. They're almost always worth watching. Extra history is OK, history has never been my subject, but they do a good job nonetheless. If you like LPs, their side channel Extra Play has put out some quality content lately. Animation in games is something I've always found interesting and they explore some great games to exemplify basic principles of animation.
I picked a video at random that was great. I was appalled at the topic, as they were as well. It was about something called Sesame Credit. China is creating a game to gamify loyalty. I googled the topic and was horrified to see other articles that say the same thing. China will be making a credit score game mandatory in 2020 that will score people's loyalty based on their behavior and their friends by input into a game-like credit score program. I was thinking of creating a post about it. Extra credits definitely got my attention just on that first video.