This problem is closely related to defining what my field is (My field is practical philosophy).
As Andy Matuschak said, anything we call ourselves is simply a short-hand to what we truly value. Nevertheless, a title is a useful signal that have practical uses (one of which is navigating questions about one’s work while in gatherings).
Since I am a generalist, I need to use titles that a generalist can use.
Examples:
- Independent researcher
- Writer