I think you're looking at it from the wrong angle. It's not about typecasting a individual person. It's about recognizing that there are these divisions
in the work that's available. It's a feature of the environment, and you should recognize it and your relationship with it.
Then you can be aware, for your own good, of where your preferences and strengths lie, and make conscious decisions about what to take on, whether working on your core competencies is wallowing or increasing your depth; whether a stretch would constitute "levelling up" or just stress.
(Incidentally, in response to your swipe at Meyers-Briggs, the same is true there: it's a tool to help you recognize your own inclinations and be aware of them so that you can grow meaningfully and purposefully. It's not for boxing yourself in and saying, "I can't/shouldn't do that because I'm an ABCD".)