Inspired by the Sedriss QL thread, how do you rank the various non-major sith lord/abeloth foes of Luke Skywalker?

Here's a (possibly incomplete) list:

Flint, Lumiya, Joruus C'Boath, Sedriss QL, Xecr Nist (the second leader of the Dark Empire Darkside Elite), Desann, Kueller, Brakiss, Lomi Plo, anyone else I'm forgetting....