[Doctor Stochastic]

D and E look wrong as the description implies that the information is definitely pointing the wrong way. I would lump D, E, and F as "cannot be judged."

[Chode]

they are grouped that way for a reason, they are talking about different trust levels of their snitches/sources from top to bottom... so a D might be a known person that's Unrealiable, where an F could be a Walkin, and they could be both telling the truth with a 1-Confirmed by Other Sources