Jaime dies.
Arya kills Cersei. Arya lives. She disentangles herself to find her own fate, which is left to mystery.
The Hound kills The Mountain and dies from his own mortal wounds.
Drogon dies defending Daenerys.
If Daenerys doesn't die, she is humbled. Dragonless, she takes the throne in Kings Landing, receives the fealty of some, but accepts alliance with Sansa, who becomes Queen of the North.
If Jon doesn't die, he is weary of the game he never wanted to play. Having seen a peace which mostly satisfies the players, he goes north of the wall to live among the wildlings and find some personal peace.
Tyrion and Varys survive and remain advisors to Queen Daenerys.
Bronn has no remaining friends and departs with the surviving members of the Golden Company.
Euron Greyjoy dies. He's either burned to death by Drogon, killed by Jaime, or killed by Yara.
Qyburn dies. Horribly, I suspect.
Grey Worm dies, or he lives and leaves for Naath with a handful of Unsullied after Daenerys takes the throne.
Brienne remains in the north to serve Sansa.
Gendry lives and takes up the lordship of the Baratheon's castle home and lands.
Samwell takes up the lordship of his families seat.
Podrick remains in the north and swears fealty to Sansa.
The fates of some other characters may be left unstated - Septa, Ellaria...