Well you got me there. I've never read Moby Dick.

Re your comment about logic, to paraphase a once popular Tina Turner song "What's logic gotta do with it?"

Among Black Americans, Ayesha, Aisha, Aesha ete etc etc are all pronounced the same. It's the sound of a name and not its etymology that is important to most Americans-Black and non-Black.

And increasingly-among Black in the USA anyway, the look of a name is also important.