I've done some analysis on what kind of content one can expect to do the best verses the worst based off of my monthly ad income statistics, please note that this only acknowledges one-offs since I've never made a fully original animated series:

Author
Porn
Meme
Award winning original content
Parody
Satire
Original content

From this, I can draw a flawed but possibly sound psychological model of what people prioritize in daily life: Identity, urge, crowd behavior, innovation, mockery, wit and finally, creativity. If you have anything to add to this psychological model of prioritization or the list of content success expectancies, it'd be appreciated.