Probably just like the Hive; they’re supposed to have originated from the species of the Hive so were only slightly different in appearance at most. The only difference is that they managed to build a stronger society so they could bully the proto-Hive and all the other societies on Fundament

Nah dude read Book 3 Verse 2, the High War. It says that Oryx made his court the High War and that one most enter the High War (ie defeat any ascendant in his Court, such as the War Priest or Golgoroth) to be able to face Oryx. Savathûn creates a High Coven with the same rules but Xivu Arath says that wherever she is she can be challenged. The Courts are not their Throne Realms, they are the most powerful Ascendent Hive in their own respectful groups I’ll do a bit more looking to find where Oryx names his Realm the Osmium Throne after his father’s Osmium Court, but I’m pretty sure it says it somewhere (again, I am aware that the Osmium Court was the name of the proto-Hive’s society and their king’s throne, just as the Helium Drinkers were a rival breed of the same species)