I completely agree the professions you provide would be people capable of a creating logical critical paths and therefore a programming language. Lawyers would

I completely agree the professions you provide would be people capable of a creating logical critical paths and therefore a programming language. Lawyers would be quite adapt at it, doctors as well, as would be educators - the examples you cite all exhibit professions that require critical analysis to achieve the basics of their profession. However, at the same time I might suspect the attorney would be the best of these three, followed by the educator. My reasoning for why these two would be better than a doctor at creating a programming language is because doctors do not need to work through the understandings of others, while both attorneys' and teachers' work requires the collective understandings of others to agree and that agreement is through the effort of the attorneys and teachers. That logical indirection required by attorneys and teachers is the insight that would enable them to create a programming language capable of use by others. Doctors would create some illegible scribble.