The modern presidency began with the adored “activist”, Teddy Roosevelt. From TR to the present, there have been only four (of twenty) presidents who first competed in a general election as a candidate for the presidency: Taft, Hoover, Eisenhower, and Trump. Trump is alone in having had no previous governmental service before becoming president. There’s no moral to this story. Make of it what you will.
(See also “Presidents: Key Dates and Various Trivia“, to which this commentary has been added.)