Forum:Most Significant Characters (without series spoilers)

hey y'all, i havent read the books yet but im aware that the perspectives increase as well as the character base, but between the show and the series, i would like to know who are the most significant major characters in the story, im curious about characters such as Arya, Jon, and Rob. Its hard trying to read the books and watch the show, not being able to know which i should invest my time into. a list would just be acceptable. now i know the spider and little finger play their roles as puppet masters in the background in the show in some cases but i need foreground characters here.

thank you for taking the time.

H