In the battle of Winterfell, I'd say Beric, Podrick, Yohn Royce, Edd Tollett, Alyse Karstark, Lyanna Mormont, Maester Wolkan will die. Maybe Varys? He'll eventually get killed but maybe not this early. Theon's an interesting one, dying to protect Bran sounds fitting but I also see him fighting Euron post "Fall of Winterfell"