Can you put a date to "Motoman"? Because until I hear that, I'd go with Jocko Johnson, Zora Arcos-Duntov, and that guy I can't remember that did head porting in California in the 50s.
HotVWs Mileage Motor had larger exhaust valves and fuel injection intake valves (because they're smaller) for that reason.
Then there is
Extrude Honing where you let hydraulics do all the thinking/guessing for you.