Steven Spielberg rarely gives his name to donations and philanthropy because, as he said in an interview years ago why he lent his name to the Shoah foundation,

Steven Spielberg rarely gives his name to donations and philanthropy because, as he said in an interview years ago why he lent his name to the Shoah foundation, to the Jews god does not recognize a good deed unless it is anonymous. Meaning it has to be done with humility and doing it for name sake is a matter of pride so it goes unnoticed by god.