The God Hand (Berserk) is a quintumvirate of demon sovereigns who act as executors of the will of the Idea of Evil, by virtue of their desires being intrinsic to the entity.
Alexander "Lex" Luthor (DC Comics) is one of the most shrewd businessmen in the world, a trait that has earned him an immense fortune rivaling that only to entrepreneurs like Bruce Wayne, Michael Holt, and Steve Dayton.
King Bradley (Fullmetal Alchemist) held absolute authority in his position as the original Führer (大総統, Daisōtō) of Amestris.
DIO Brando (JoJo's Bizarre Adventure)
Diavolo, the boss of Passione (JoJo's Bizarre Adventure Part 5: Golden Wind/Vento Aureo)
Known as the Monstrous Bird of Qin, Ou Ki (Kingdom) held a great amount of influence across 7 States of China having served as one of the leading military figures of King Sho's era of warfare and a member the Six Great Generals of Qin.
As Chancellor of State of Qin, Ryo Fui (Kingdom) held almost absolute power in matters of the state, financial income, and political courts of the kingdom.
As the Prime Minister of the State of Chu and Head of Military Affairs, Shun Shin Kun (Kingdom) stood at the pinnacle of political power, having a hand in building up the entire superstate of Chu.
Serving as his state's leading military figure and as the Prime Minister, Ri Boku of Zhao's Three Great Heavens (Kingdom) holds great influence and power among the 7 States of China.
Master Xehanort (Kingdom Hearts) influenced many to follow his beliefs, to the point of having an entire organization under his control.
T'Challa/Black Panther (Marvel Comics) is the ruler of Wakanda, one of the most technological advanced countries in the Marvel Universe.
As the Kingpin of Crime, Wilson Fisk (Marvel Comics) holds total control over the criminal underworld of the entire eastern seaboard.
As the symbol of Peace and Justice, All Might (My Hero Academia) inspired the lives of many young heroes with his seemingly unstoppable heroism.
All For One (My Hero Academia) shares All Might's influential nature to the point of having his name feared from all.
Stain (My Hero Academia) despised "Fake Heroes" and slaughtered those he believed weren't worthy. His belief had many other villains rise from the shadows.
Even in his old age, Madara Uchiha (Naruto) was able to convince Obito Uchiha to follow his plans.
With the Akatsuki and the Hidden Rain under his control, Pain/Nagato (Naruto) proclaimed himself God due to his almighty powers.
The Gorosei/Five Elder Stars (One Piece) are the heads of the World Government, and as such, they essentially rule the entire world. They are the five men who rule above the Marines, Cipher Pol, and the ones who made a pact with the Shichibukai/Seven of Warlords of the Sea.
The Yonko/Four Emperors (One Piece) are four of the most notorious and powerful pirate captains in the world, residing in the second half of the Grand Line - the New World, exerting impressive influence and control over dozens of other pirate crews and self-governing islands....
Donquixote Doflamingo (One Piece) had great amounts of influence on the world, being a Shichibukai/Warlord of the Sea and a infamous world class pirate/info broker for the underworld for The New World.
The Vinsmoke Family (One Piece)
Snoke (Star Wars) was the Supreme Leader of the First Order and therefore had absolute power over it.
Talon Karrde (Star Wars Legends)
As the leader of the Diamond Authority, White Diamond (Steven Universe) has absolute authority over Homeworld and the Gems, even more than the other Diamonds.
The Evil God Ehit (From Common Job to Strongest In the World) has absolute influence over the people of Tortus by exploitng their Religious fanaticism and worship towards himself...
...having instigated them to fight millienias of brutal religious wars for his own twisted entertainment, and even defeated his archenemies the Liberators simply by turning the people against them.
Hajime Nagumo (From Common Job to Strongest In the World) through ingenious manipulation and trickery, has caused a massive revolution in Tortus, rallying support from the Heligh Kingdom and Hoelscher Empire to successfully turn humanity against the Evil God Ehit.