In the end nobody won the iron throne or united the 7 kingdoms.
Loved Drogon melting the throne. It forshadowed the fractured kingdom and change in how rulersno longer gained power by the sword.
Brand being king was the easy way out. Yes they tried to make a good case for he was "a new way forward" but he was kind of a smug little s***. Telling Jon he "was exactly where he was supposed to be" and the "Why do you think I came all this way?" comment. He cannot sire children so they made it sound like that was good because he wouldn't continue the ruling by birth idea. But it also means he doesn't have to ensure he does what is best for anyone but himself. I feel like he is the snake in the grass no one recognises.
Sensa was never my favorite and she showed she was in it for herself by refusing to join the other kingdoms and becoming Quen in the North. Kind of like the kid who takes his ball and goes home if he can't be the captain.
Jon found the strength to kill Dani and in the end his exile put him right where he always wanted to be so he can claim a bit of a victory but at a high price.
Greyworm is a jerk to put it nicely. Should have died. Reminded me of all the war criminals who "were just following orders" while killing everyone,
Therion in my mind was the biggest winner. He not only lived but became the hand of what I see to be a very weak king. He will wield the true power the same way he did under Ceri and then Dani. For a moment I hoped he woudl accept the crown just to see Greyworms head explode. He was probably my favorite character and I think he truely tried to do what was best for the people in the end.
In all the final season seemed like the writers were rushing to end things quickly and without development because there were so few episodes.