I've recently found this very interesting and illuminating personality system based around the Enneagram (an ancient symbol made popular by Gurdijieff)
Check out some information on it:
https://www.enneagraminstitute.com/And if you're curious to see which "type" you are, take these two tests:
https://www.eclecticenergies.com/enneagram/test.phpThe first test will tell you which type you likely are and what your "wing" is (which of your neighboring types you are closest to). The second test will also tell you which main type are likely are, as well as what your "dominant instinct" is (self, one-on-one/sexual, or social), which adds more detail to the description you can read about that you might be.
I'm a type 4 with a 3 wing and the sexual variant.
If you take the tests, please post your results! I would be curious to know which you find yourself to be!