Marie Lu! The 7th richest YA (Young adult) author of all time! (ranked by networth) Shes written SO MANY BOOKS, yet all of them are more amazing than the next. You'll laugh, cry (because your laughing so hard (yes i did include a Gilmore Girls refrence in this)), smile and enjoy every book.
Alice Oseman! A graphic novel/short novel writer that makes people cry (either happy or sad tears) and includes LGBTQ+ diversity in her writing.
Angie Thomas! She writes amazing novels you cant take you hands off, and each one is as good as the last. She, like many countless authors, included diversity in her writing.