This tier list only includes Duelist and Force Users of the Star Wars Universe but takes into account other skills and abilities that these characters might have.
The Father, The Son, The Daughter, The Bendu, The Force Priestesses, Possibly Force Ghost
This tier has an understanding and manipulation of the force that is unrivaled even by those who have mastered many of the aspects of the living force.
Darth Sidious, Yoda, Mace Windu, Mother Talzin**
This tier includes people who have learned or discovered secrets of the force that few if any others ever had. Their knowledge of the force and skill with a lightsaber are monstrous and few can compete with them.
This tier has mastered both aspects of the Force and lightsaber combat and are among the best of their era.
Sith Assassin Tier
Asajj Ventress, Savage Opress, Kanan Jarrus, Rur*, The Grand Inquisitor, Kirak Infil’a, Lord Momin, Luminara Unduli
This tier has begun to master either areas of the force or dueling ability yet is still skillful in the other area of combat. This allows them to begin to compete with people on higher tiers on some level.
This tier has learned the basics of the force and lightsaber combat but aren’t particularly skilled in one or both of the areas.
Pre-ESB Luke, Chirrut Imwe, Zett Jukassa, Finn***
People who aren’t particularly skilled in neither the basics of lightsaber combat nor use of the force. These people also have no notable skills or equipment that allow them to transcend this level.
*Cyborgs and Robots who are duelist typically can’t use the force but either have defenses against the force, weapons, enhancements or skill with a saber to allow them to reach their tier.
**High tier force users may not be particularly skilled at dueling, but their use of the force is beyond what we see even from people who are overall more powerful than them even approaching the levels of the Ascendant tier.
***Non-Force Sensitive duelist tiers are based on skill and equipment.