According to Raja Faisal (in a tweet),
"Before we started writing for the Gur'latan Arc, I've written and compiled the complete background for the planet such as the royal family, social standing and military hierarchy, structures and location layout, even their tech and resources.
Not all of them made it into the Arc itself, of course. But they are essential to the world-building and lore. This is by far the most complicated and time-consuming background story that I've ever done since BoBoiBoy Galaxy x Lawak Kampus: Superior."