Mike Flanagan hit Twitter earlier to bring word of 5 directors joining The Midnight Club:
Honored to announce the other filmmakers helming eps of THE MIDNIGHT CLUB. Emmanuel Osei-Kuffour, Axelle Carolyn, Viet Nguyen, Morgan Beggs, and my dear friend Michael Fimognari will all direct episodes. I'm grateful and lucky to collaborate with such terrific artists.
— Mike Flanagan (@flanaganfilm) June 13, 2021
Coming Soon.net provides a little c.v. for each:
[...] Emmanuel Osei-Kuffour (Black Box), Axelle Carolyn (Tales of Halloween), Viet Nguyen (Lucifer), Morgan Beggs (Smallville), and Michael Fimognari (To All the Boys: Always and Forever). This project will reunite Carolyn and Beggs with Flanagan, who all worked together on Netflix’s The Haunting of Bly Manor, with Carolyn directing one episode while Beggs worked as a first assistant director on three episodes. (Source)
