I will soon publish my own Royal Series, it's called the Eight Crowns. So, it's a story with royalty themes that are set in a modern world (Like ours) but the eight kingdoms are fictional and inspired by existing royals.
(Not in accurate order aside from the very first one. Many of them didn't have any title yet but there's already a plot and troupes for the story)
1. Kingdom of Regalius, the storyline would be titled 'The Heir of Regalius' and the main character or the OC is Crown Princess Eira Leslyne Victoria Regalius.
2. Kapuluan ng Bunggaitan/Archipelago of Bunggaitan (This kingdom is inspired by my own country, Philippines, so, I'm still debating if the story would be published in Filipino or not) This one doesn't have any title yet but the main character or the OC would be Bai (Princess) Amihan Bunggaitan.
3. Seon Qin Dynasty, doesn't have any title yet but the main character is Crown Princess Yuri Seon Qin.
4. Hōrōtei Imperial Empire, also doesn't have any title at the moment but the main character is Crown Prince Ayato Hōrōtei.
5. Court of Bellamoure, didn't have any title, the main character is Princess Araminta Claira Maelyse Bellamoure (I love this OC)
6. Kingdom of Alcazar, didn't have any title yet, main character still deciding.
7. Osmalion Empire, still untitle and main character still deciding.
8. Empire of Varyskan, untitle yet but the main character is Empress Restia Raskova (This would be a Dark Romance, Restia and Mikhail ah!)