Question on leadership

We need your ideas and your input!
{Question on leadership}
Who are the best Muslim leaders in the world?
People who benefit others the most?
Entrepreneurs? Inventors? Scholars? Anything....??? Any field. Business, Dawah, Sport... Share your Top 3? (*they must have lived in the last 50 years)
Also - What about brands they have created? What/Who are they?

*This info will be used for our next presentation regarding Leadership, Aspirations and entrepreneurship in Islam.

Thank you all