Daniel: ENFP (When you look at his interviews he stumbles over his words like an Ne or ENTP/ENFP would, but including that i believe when he stumbles over his words he has a more Te edge. I feel all of this controversy about masking social things is more of an Fi shield.
Emma: INFJ (after reading part of this forum and watching videos, Emma definitely has Fe but i dont think lead, people got the idea of ISFJ vs INFJ, and i think its more probable for her to be INFJ more of the fact of a Ni + Ne connection she has with Daniel and ISFJ sounds far fetched with lead Si scoring well on SATs)
Rupert: ISFP? (i haven't looked into him to much)