A'Sharad Hett is a Tusken Raider Jedi. He isn't a Sith.
Bultar Swan and Koffi Arana are both Jedi who are in the Dark Horse one-off, PURGE
. It's the story of a group of Jedi who gather on Kessel after Order 66. They meet to determine whether to fight or go into hiding. Vader ambushes them at the meeting, taking out most of the Jedi and leaving a couple for the 501st to kill off. Bultar Swan had a small ammount of screen time in Attack Of The Clones
and has a Databank entry here
. This is what she looks like in the movie, but in the comic she wears armor.