“Finding Me” a memoir by actress Viola Davis (post 4): Says most sex abuse survivors like her have “dissociative disorder” (1, p. 282) and since the ultimate dissociative disorder is dissociative identity disorder (multiple personality) (2), it may be her self-diagnosis

However, since Viola Davis is not mentally ill, I would not call it multiple personality disorder, but, rather, multiple personality trait, which is seen in many successful, creative artists. 

1. Viola Davis. Finding Me (memoir). New York, HarperOne/Ebony, 2022.

2. https://en.wikipedia.org/wiki/Dissociative_disorder