Of all these, Ventress. I didn’t like her at first but she develops a lot after TCW S3. I will never enjoy Sy Snootles and I’m neutral with everybody else. Her voice sounds very entertaining despite its intent to be menacing for Ventress and a part of me always tries not to laugh.

The only cool thing Sy Snootles ever did was kill Ziro the Hutt.

I like Shaeeah Lawquane, but I like Asajj Ventress more.

Velvet Velour from Vampire: The Masquerade - Bloodlines. Most of her Star Wars roles are just "eh" and I really don't care for 2008!Ventress, though that's entirely Filoni's fault for taking one of the most interesting prequel-era characters and mangling her. Futterman did a fine job as Original!Ventress, and I would've liked to see more of her.

Edit: Oh wait, Grey DeLisle played Original!Ventress, AND she played Therese and Jeanette Voerman. Futterman probably could've been fine as Ventress, but DeLisle was the better option.

Personal favorite is Asajj Ventress for sure