In regards to timelines? As of right this minute, Din Djarin is the best right now. Yes, right now as in this moment. Do me a favor and live in it, would you? Quote from Joker, the Killing Joke.
As a character, Din, as an actual bounty hunter, I guess Jango, Boba, or Cad Bane. Don't really know. Din hasn't really shown he's a great bounty hunter
Also @Nottheway you buggin' if you think Asajj, someone who struggles against clones and Boba, can go up against a man who's killed Jedi with his bare hands, an alien that stood up to Obi-Wan in a lightsaber duel with items that doesn't allow the force to effect him that much, a man who was the clone of the most feared bounty hunter ever, and has lived up to his feats by also killing Jedi, and a literal ninja 💀
Jango Fett
Boba Fett
Cad Bane
Embo 
Asajj Ventress
Din Djarin
