From Greys to Reptilians: The Four Core Alien Archetypes in Contemporary Lore

To the point

Researchers Hal Puthoff and Eric Davis say there are four main recurring alien types in reports and lore—Greys, Nordics, Tall Whites, and Reptilians—with Insectoids as a rarer motif, and earlier lore mentions Venusians and Adamski, though none of these claims has solid proof.

The 5 Types of Aliens People Most Frequently Say They See
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The 5 Types of Aliens People Most Frequently Say They See

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.