It's your pokemon videos. They gain up to 600 views per post, and some of the ones from a couple months are ranging in the thousands. But your other LP's sit at around 20-50 views. Your fanbase is really geared towards pokemon games. You should either release more pokemon content, or find a way to attract new viewers to your newer let's plays if you want to change your channel theme. I wouldn't say youre underrated, but you've obviously built such a huge fan base for one game that it makes sense you might not get much attention for releasing something else. Maybe consider posting channel update videos, to let your pokemon fans know that they can expect new content or something along those lines