Blair: ENTJ in the tv show, INFP in the book. (She's extremely different in the book. She lives in her own head a ridiculous amount, and daydreams about future possibilities like crazy, creating scenarios that could never happen where everything ends up with a happily ever after.)
Nate: ISFP. (This is more prominent in the book than the TV show. He's such an S, it's ridiculous.)
Jenny: ISFP in TV show; ESFP in book.
Vanessa: ENFJ. (In the tv show. I skim her parts in the book because she annoys me.)
Chuck: ESTP. (This one is the hardest; I'm not sure.) He's nothing in the book because he has no development.
"Imagination creates beauty, hope, magic, and happiness, which are everything in this world."