The Nobody is a figure alive today who has no extraordinary powers of any kind, doesn't claim to have any, and doesn't want any.
They are Nobody because they want to be literally nobody.
No powers, no authority, no claim.
To follow the same rules as the rest of the universe.
They don't want to dominate and control the universe, but dance with it.
They just want to chill out and love life.
If they had any extraordinary powers they would use their powers to destroy the powers.
Leaving them and everyone else in the original situation: equal among each other before the laws of the universe.
What Would Frodo Do?