[silcoon]

Guy Steele, Rich Hickey, James Gosling, Kernighan and Ritchie, Guido Van Rossum, Bjarne Stroustrup.

Harder because the bar is really high.

[tmtvl]

Nickles Worth (or Niklaus Wirth if you prefer to call him by name rather than value).

[amelius]

Wasn't Stroustrup more a language designer than a compiler guy?