The Purusha Sukta's account of the world produced from a sacrificed cosmic person belongs to a recognized comparative mythological type, the "dismemberment" or "cosmic giant" creation myth, attested independently in several unrelated traditions closely enough that the pattern has become a standard subject of comparative mythology.
In Norse mythology, recorded in the Prose and Poetic Edda, the gods Odin, Vili and Ve kill the primordial giant Ymir and fashion the world from his body: his flesh becomes the earth, his blood the seas, his bones the mountains, his skull the sky, a division of cosmic anatomy into geography close in structure to the Purusha hymn's derivation of the moon, sun and social classes from the sacrificed Person's body. Chinese mythology supplies Pangu, who separates heaven and earth by growing between them for eighteen thousand years and, upon death, has his breath become wind, his voice thunder, his eyes the sun and moon, and his body the mountains, again distributing cosmic features across a single primordial body. Babylonian mythology offers a related instance in the Enuma Elish, where Marduk kills the primordial sea goddess Tiamat and splits her body to form sky and earth, creation through the destruction of a primordial being rather than fabrication from inert material.
Historians of religion generally treat the recurrence of this pattern across traditions with no plausible direct connection as evidence either of a very old, widely diffused template or of an image striking enough that separate cultures arrived at similar solutions independently, a debate the parallels with Ymir and Pangu illustrate rather than settle.