J.K. Rowling has also written books under what first name? Correct
In an effort to distance her crime fiction from the immense shadow of Hogwarts, J.K. Rowling adopted the masculine first name Robert. She debuted this alter ego in 2013 with the publication of The Cuckoo’s Calling, the first installment in her gritty detective series featuring the private investigator Cormoran Strike. Rowling chose this specific pen name to ensure her entry into the mystery genre would be evaluated on its own literary merits, free from the global hype and expectations typically attached to her real identity.
Source:
https://www.youtube.com/watch?v=D7EzgVqHhT4
https://www.threads.com/@beliproduk.official/post/DWXQ2PHEpo5