Which topic is easy for beginners to make money on YouTube?

There are so many topics for newbie when taking part in making money on youtube. Therefore it is difficult for them to choose. Which topic is relevant for beginners.?

The best would be original content, if you can come up with something. Now the previous methods will probably not work. Youtube is banning like crazy and seems they don't care about so many missing videos... I had bookmarked over 200 vids, 40% of them are gone now, they all together probably had few 10s of millions views.

Thanks so much. I really want to have the guide to make money on youtube.