>>212774720The difference is Sam is a boring serial killer while the other 3 you listed capture the public's imagination with their crimes.
>Ed GeinMade furniture out of human skin
>John Wayne GacyWas a public figured well known/liked in the community + the killer clown angle. Targeted children.
>BundyThe archetype for the "cool, handsome, intelligent, well-spoke monster serial killer" that characters like Dexter are based off of, also his entire public trial + the 2 escapes. Targeted young beautiful women.
>Sam LittleMost of his crimes were just from confessions he made after the fact and they were almost all just basic ass strangulation's. Targeted hookers/homeless.