Paladin of End (you need to get an ebook) Hakai no Miko (look promising) Grimgal of Ashes and Illusion (good enough) Ashes and Kingdom(Legit medieval fantasy) Akuyaku Reijo Ni Koi Wo Shite (Highly Reccomended) Bu Sha (same author of Sun Knight) I Reincarnated as a Noble Girl Villainess(not usual otomo isekai) Vermillion(plainly good adventure stories) Tales of Leo Attiel ~Portrait of the Headless Prince (same author of Rakuin no Monshou, so it's good) Zhu Xian (Classic real xianxia, be warned it's tragedy) On royalroadl Leaving Earth(beautifully interstellar story and there's sequel) A Hero's War (isekai with real worldbuilding) On fanfiction Mother of Learning (this's original novel, highly reccomended) The Fifth Act (Good time travel story, Final fantasy 7) p.s Happ reading
Seems like it, the protagonist personality and ambition does look bit suitable for ruling over people.