Although I haven't followed this tactic here, I know from experience and from other websites and blogs, that opinionated-style posts make the least amount of money. When it comes to making more money with your writing, you'll need topics, titles, and lots of content that relates to things that people often make queries about and/or search for. Web pages featuring creative writing, short stories, poetry or random ramblings, for example, is a lot harder to get natural search engine traffic, clicks, sales, whatever, as opposed to informative posts, product reviews, how-to advice, or interesting subjects that are highly searched for. There are endless amounts of topics a person could write about, but keep in mind, when it comes to making money via PPC (pay per click) or by way of affiliate sales, effectiveness doesn't always come from what you may think is your best work.
It's often a mechanical process with a hint of SEO.
Now, if you're talking about which genres make the most money per advert click on average, you can search online for that, but it mainly just depends on how competitive the search terms are, that you are ranking high for. Blah! I've rambled enough for one question; good luck with the revenue! :)