minecraft is generic tho
Exactly why it's perfect for streaming. It's a very versatile and simple to follow sandbox game with a large fandom.
OP, keep in mind that the key to any sort of entertainment is personality. People will tell you to be yourself, but you have to experiment and see what gets the best reaction out of your audience.
The best way to study this is to look at youtubers that gained a lot of popularity, compare their personality to their first videos to their latest videos, and study their audience. If you can find your people and appeal to them, they'll stay by your channel forever.