Try James K. Polk.
He promised to serve only one term, and he voluntarily retired after only one term.
The four goals on his agenda--including tariff reductions, the re-establishment of the "Independent Treasury System" (which was later replaced by the now-infamous Federal Reserve System), and the acquisition of California, New Mexico, and parts of the Oregon County--were all accomplished.
Ironically, he was a Democrat (from Middle Tennessee)...but a Jacksonian Democrat.
You have me on Polk. In all candor, do you think he could have accomplished this during Reagan’s term? Or anything much at all? Since the mid 70’s Congress has been nothing but a criminal left wing enterprise.