Who are the main characters in the story The boyfriend list

Apparently only 8, according to wikipedia and other sites, but they all involved him personally in the murders. I dont know how many hits he ordered but it has to be more, i would love to know.

it is the characters that are in the movie for example is there is a movie called ice cream and there are characters there are ice cream named chicken and pepper jack cheese, the characters would be pepper jack cheese and chicken.