I don't know if folks have pinned each adventure to their author (and likely cultural inspiration) yet, so I'm going to try and piece it together!
Salted Legacy - Surena Marie (Thailand)
Written in Blood - Erin Roberts (US Black South)
The Fiend of Hollow Mine - Mario Ortegon (Northern Mexico)
The Wages of Vice - TK Johnson (Louisiana, Caribbean)
Sins of Our Elders - Stephanie Yoon
Gold for Fools and Princes - Dominique Dickey
Trail of Destruction - Alastor Guzman (Mesoamerica)
In the Mists of Manivarsha - Mimi Mondal (Bengal, Gangaridai, Sundarbans, Ratargul, Assam, Purulia, Bagan, Myanmar)
Between Tangled Roots - Pam Punzalan (Luzan, Philippines)
Shadow of the Sun - Justice Ramin Arman (Iran)
The Nightsea's Succor - Fox Harrell (African American)
Buried Dynasty - Felice Kuan (China)
Orchids of the Invisible Mountain - Terry Hope Romero (Venezuela)
The Radiant Citadel itself - Ajit George
Beyond the Radiant Citadel (gazetteer) - Basheer Ghouse (India, Mughal Empire and Thughluq Dynasty)
Beyond the Radiant Citadel (gazetteer) - Jane Miyuki
Before you ask, I used only the culture/nations names used by the authors themselves in their own tweets. I used their words, so please don't @ me!
These adventures also seem to be in order (roughly) by level. Shadow of the Sun is 11 level, for example.