Scientist - 600 documented individuals
Notable examples: Hank Pym (Ant-Man), Reed Richards (Mr. Fantastic), The Mandarin
Student - 510 documented individuals
Notable examples: Nova, Firestorm, Mettle
Police - 486 documented individuals
Notable examples: Banshee, Guy Gardner (Green Lantern), Judge Dredd
Soldier - 415 documented individuals
Notable examples: Captain America, Bishop, War Machine
Business Owner - 390 documented individuals
Notable examples: Luke Cage, Cardiac, Mysterio
Doctor - 251 documented individuals
Notable examples: Doctor Doom, Doctor Strange, Jane Foster
Actor/Actress - 247 documented individuals
Notable examples: Clayface, Buddy Baker (Animal Man), Elasti-Girl
Military Officer - 193 documented individuals
Notable examples: Captain Atom, Deathlok, Nick Fury
Intelligence Agent - 188 documented individuals
Notable examples: Phil Coulson, Puck, Jessica Drew (Spider-Woman)
Reporter - 159 documented individuals
Notable examples: Clark Kent (Superman), Ned Leeds (Hobgoblin), Iris West Allen
Servant - 153 recorded individuals
Notable examples: Alfred Pennyworth, Edwin Jarvis, Stargrave
Spy - 151 documented individuals
Notable examples: Natalia Romanova (Black Widow), Betty Ross (Red She-Hulk), Cinderella
Attorney - 142 documented individuals
Notable examples: Matt Murdock (Daredevil), Jennifer Walters (She-Hulk), Cable
Ruler - 140 documented individuals
Notable examples: Emperor Dorrek the 7th, Odin, Thanos
Thief - 127 documented individuals
Notable examples: Selina Kyle (Catwoman), Larfleeze, Gambit
Pilot - 115 documented individuals
Notable examples: Hal Jordan (Green Lantern), Carol Danvers (Captain Marvel), Carol Ferris (Star Sapphire)
CEO - 114 documented individuals
Notable examples: Tony Stark (Iron Man), Bruce Wayne (Batman), Oliver Queen (Green Arrow)
Teacher - 98 documented individuals
Notable examples: Betty Cooper, Kitty Pride, Black Panther
Politician - 98 documented individuals
Notable examples: Jay Garrick (The Flash), J. Jonah Jameson, Mitchell Hundred (The Great Machine)
Bodyguard - 85 documented individuals
Notable examples: Danny Rand (Iron Fist), Stronghold, Iron Man (Mark VII)
Inventor - 77 documented individuals
Notable examples: Norman Osborn (Green Goblin), Stilt-Man, Peter Parker (Spider-Man)
Professor - 75 documented individuals
Notable examples: Professor X, The Atom, Abin Sur (Green Lantern)
Athlete - 68 documented individuals
Notable examples: Bullseye, Northstar, SuperPro