The books here aren't ranked because they are all unique in their own way. And the books not mentioned here are not bad, either the author hasn't found the opportunity to discover them or the author doesn't find them interesting enough. But the case is mostly the former.
Everyone's views may differ and the author does not intend to offend anyone, the books mentioned here are the best in the author's view.
P.S. Everything written here is my personal opinion. The books mentioned here are mostly teen fiction, chicklits and romance.