I think there is an audience for all types of videos. Finding and connecting with the audience is the trick. I could not make videos 'just for the views'. If I do not have any interest in it, I think it would show in the video. Make videos on what you are passionate about, and with a lot of work, and even more luck, you might make it.
Smaller genres will have fewer potential viewers, but also maybe fewer channels. There are some genres that seem more popular, but they are also saturated with channels - getting traction is still a problem. My wife wants to make a channel, but she is shy of her English, and wants to speak a mix of Kiray-a and Tagalog. My first thought was that most of the world speaks English... but then again, there are 100 million Filipinos. If she could just get a fraction of those...
There is an audience for whatever you want to make.