If you're wanting names, Jerry Miculek, Julie Golob, Randi Rogers, Doug Koenig, and Brandon Wright.
All part of the S&W stable of shooters. All have won with some incarnation of the M&P platform. Jerry, recently won the open division at a big 3-gun match using the M&P platform with I think a stock trigger. The other three have won Area/Sectional matches in their class/category.
If you're looking towards the outside of competition shooting, Frank Proctor of Way of the Gun. He jumps platforms due to his role as a shooting instructor. But recently the M&P 2.0 is his flavor of the day.
**insert unwarranted advice about shooting what you like here**