Honestly in my opinion do what YOU like. No point in playing games you have no interest in and just to get subs. You will come across very badly.
Look at me for example, I know full well the most popular things are stuff like minecraft and first person shooters. I HATE those kind of games (apart from N64 goldeneye). Now I have very little subs and views I know, but its not something I care about. I just do it for fun with my 5yo son. He loves his mario maker and i'm learning sony vegas so i'm starting to do top 5 stuff which I enjoy doing.
Good luck regardless though.