What makes a successful bookjacket?

As I was scrolling through the many book covers I was surprised that only a few on the page would jump out at me. I took a closer look at the covers after I realized this and found out that most of them were indeed very successful but I guess I have a "type" when it comes to the covers that I find most appealing. Below are some examples and almost all of them are very minimal or are black and white. I love when the covers have white space and they force you to focus on the few objects that they are displaying.