The examples of characters given in 2e mostly are from mostly from accounts of possible real life figures, low power fantasy books, or outright godly myth and religion.
Its a very very very limited spread of literature source to match the full level range of D&D post year 2000. None of the examples covers what 3e, 4e, or 5e would consider levels 6-20.
Like the fighter goes has regular low level humans like Sinbad, Hannibal, Little John, and Spartacus then legit demigods like Hercules, Cu Chulainn, and Perseus with maybe maaaaybe Beowulf in between.