Spacekin

Frau Vanderhoeven waved to me to come over. "Greetings, spacekin!" she said. "We are only just finishing our funeral pyre."

In addition to the otherkin identify as animals, there are some who identify as mythical creatures, like dragons, fairies, or vampires; fictionkin, who identify as fictional characters, frequently from anime series or videogames; weatherkin, like Marco, who identify as weather systems; conceptkin, who identify as abstract concepts; spacekin, who identify as celestial bodies; and several other even more obscure categories (musickin, timeperiodkin—the list goes on).

There's plantkin, spacekin—who's to say planets don't have souls?—and a whole bunch of other Otherkin, It's not just animals.