Amateur
A proposition: what if amateur could outrank professional in terms of our respect? We tend to use amateur pejoratively, to indicate the lack of skill, but the word in French means lover. If you think about it this way:
Amateur: one who loves
Professional: one who is financially obligated
Which one has the lack? I think it’s worth considering our knee-jerk moral judgements on the term. It’s perilously close to my fanfiction soapbox, but I can think of so many instances where love of, for intrinsic reward is just as if not more commendable than obligation to, for extrinsic reward.
Then we could introduce the term vocateur, for those whose amateur pursuits become expertise.