The Hej'sorai were an ancient group of Darksiders that were before the Sith (in my Universe/canon type thing). They had lots of members back then, but now a few. They sometimes rise and fall (along with the Jen'saraii)
Both Hej'sorai and Jen'saraii had titles in their groups, but some members didn't like titles. Hej'sorai used aliases although it wasn't mandatory.
The Jen'saraii are their light-side counterpart, and enemy (sometimes.)
They used Lightsabers, but also Vibroaxes and Vibrostaffs. They knew how to use guns, but didn't use them that much. They used guns that had ammo, and not Blasters with lasers.