I will go for the World Cup Final referees - George Reader, Jack Taylor, Howard Webb (or do you have to have died to be included?) or possibly Stanley Rous although he had many other strings to his bow
Yes, although William Ling was also a World Cup Final referee (1954). I would agree with George Reader and Jack Taylor, although I would not be surprised if it was Stanley Rouse and Jack Taylor. As you say, Stanley had many strings to his bow, including FIFA President, and was instrumental in the introduction of the diagonal system of refereeing and lining following great controversy in the 1932 FA Cup Final.