The only cheese I don't like is Gjetost. Other than that I don't have a singular favorite. The sharp cheeses with the most umami flavor are my favorite as are the veined cheeses. Some of my top favorites though would be:
Stilton
Roquefort
Extra sharp aged cheddars
Jarlsberg
Swiss
Stilton
Roquefort
Extra sharp aged cheddars
Jarlsberg
Swiss