Karl Marx vs Ayn Rand
They are 18.5 apart on the PoliMap compass, a 35% match with each other on this chart.
Karl Marx (Communist theorist) and Ayn Rand (Objectivist novelist) are useful to compare because their public records pull toward different mixes of markets and authority. The gap of 18.5 is the straight-line distance between the two coordinates, not a moral score.
See where you land between them