People from the Pleiades who actually do not exist. According to Sfath's Explanation, Billy was told as a young boy that by initially using the term Pleiadian, when referring to the origin of his contactors, the fraudsters and deceivers who would later also claim to be in contact with Pleiadians would and have now have been exposed.
Billy was told that the Pleiades star cluster in our space-time configuration is too young to support life and the Plejares is the true star system from whence Sfath, Ptaah, Semjase and the other Plejaren originate.
If you type Pleiadian into Amazon books, 22 pages of books with variations of the word in the title come up. None of them have anything to do with Billy Meier and the information he has given.