Darth Plagueis could have a role in The Acolyte given the timeline lining up, making his appearance more likely than Bane's.

Fans of Thrawn books should jump at the book purely for the diabolical machinations and character-forward writing. There are ...

Darth Plagueis was a Dark Lord of the Sith ... he had another apprentice in the form of Qimir, a new character who’s future fate is now unknown, given his introduction in the show.