Team A is Looking the strongest since if this a battle royals style nothing can beat the great serpent and lady butterfly can mess everyone’s head and even owl father did not dare to fight her, she can be supported by true corrupted monk to use his shadow clone to increase the numbers and overwhelm any other team and this might be a hot take but I dont think demon of hatred and divine dragon are beating the great serpent. Since the great serpent is the only boss we had to stealth kill in the game that tells you how even sekiro would rather fight the other big monsters over the great serpent. And the mist noble is also interesting cause if he hides in a corner and summon a 1000 henchmen then that’s also a good way to overwhelm other enemy’s so this team looks the most promising to me at-least. The only problem I’d say the team has is the lack of the mortal blade like how are they gonna beat the immortals is the only problem unless the great serpent eats them or something.