Beric would be the best entrant out of leftfield for filling the Azor Ahai role in the show. He’s riding north with his dog. He’s married to a Dayne of Starfell. He’s called the fucking lightning lord. We’ve already seen him fight with a flaming sword. The lord of light clearly favours the fucker given that he keeps bringing him back to life.
I know it’s highly unlikely, but it would be cool. And yes, I know that there’s a good reason why he won’t be Azor Ahai in the books.