At the climax of Star Wars: Episode IX - The Rise of Skywalker, Kylo Ren arrives at Exegol after Rey and manages to assist her in fighting the Emperor.
When Kylo Ren first descends into the bowels of Exegol’s structure, he encounters multiple “hooded cultists,” who Star Wars has identified as cultists of what is called “The Sith Eternal Army” or “Sith Eternal.” These cultists are working on random machinery and scurry away. They are also far removed from an arena-full of Sith who patiently wait behind a veil to cheer on their Emperor Palpatine in his fight against Rey.
Eventually, Kylo makes his long trek to the “Jedi dueling pit” where the large convocation of Sith Eternal cultists are watching the fight. Palpatine is defeated in a massive explosion of Force-energy or feedback, and this explosive wave appears to wipe out the arena-full of hooded cultists.
Did that explosion wipe out all of the cultists on Exegol, including ones not watching the fight in arena bleachers?