Who is the richest author in the world?

I'm curious, who holds the title of the richest author in the world? Are they a novelist, poet, or perhaps a writer of self-help books? And how did they accumulate their vast wealth? Did they achieve it solely through their literary works, or did they have other ventures or investments that contributed significantly to their net worth? I'm eager to learn more about this individual and their journey to becoming the wealthiest author globally.