For China:
I suppose lords from the Three kingdom period (e.g. Cao Cao, Cao Pi, Liu Bei, etc) are already exploited too much in Japanese video games so I will avoid them.
For leaders who possessed a strong military or succeeded in conquests, I will purpose
Qianlong, an emperor in Qing Dynsaty who initiated many conquests in stabilizing the country. He also patronized art and cultural growth.
Tang Taizong, the one who tamed the nomads and foreign nations through war and diplomacy, earning the title "Universal Khan" and opening the golden age of Tang Dynasty.
Han Gaozu, the one who fought his way from a commoner onto the throne after Qin dynasty's collapse.
They opened golden eras of Chinese history, both in terms of military and culture.
If you want a more cultural/enlightenment leader, I recommand:
Han Wu Di (Literally military king of Han), he tamed barbarian/nomads around China, securing the borders and more importantly, prioritized Confucius ideologies that affected China for the next two thousand years.
Sun Yat-Sen who was praised as "Father of Nation" for he enlightened Chinese people of Freedom and revolutionary ideas (although in many times he did not rule but remained a respected figurehead)
Mao ZeDong (for we all know he was bringing the communist ideologies and organized a "revolution in culture")
For religious Leaders, Confucius believes are actually not religious believes, but something like ideologies. The real religions are Buddhism and Taoism. Therefore, I recommend:
Han WenDi/ Han JingDi, both prioritized Taoist ideologies and traditions in follow natural ruling (i.e. reduce restriction and taxes, let people grow and prosper).
Wu Zetian, surprisingly, she was actually an empress rising Buddhism status into high levels in China. On the other hand, her military strength was not comparable to Qianlong, etc.
For a alternative female leader, I still recommand Wu Zetian, but if you got tired of her face from Civ V, we still have many powerful female regents in Chinese history:
Dowager LuZhi, the first dowager empress to assume true control over state matter. Her ruthlessness in torturing enemies stabilized her rule (as have WuZeTian did too).
Dowager Cixi, the latest dowager empress who fully controlled state matter and led China into wars with western countries. What she had done was promoting superstitious followers into real military combat (leading to Boxer's Revolt) and also slowed China from westernization.