Work anywhere long enough, and you’re going to become the <something> person. From that point on, all questions, advice, etc. on that topic by default go to you. In my experience, this isn’t usually the result of some deliberate action to make a person the <something> “expert”, it’s the result of the work they get assigned and end up doing. The bigger questions are, what are your areas of expertise, what would you like your areas of expertise to be, and what are you doing to make the 2 previous answers line up?