David Williams, Forbes:

Steve Jobs is a hard act to follow, but thus far, Tim Cook is doing a tremendous job. Rather than attempt to match the consumer-facing innovations that Jobs had been known for, Cook is forging the future with his own new advances. Unlike Jobs, he can be soft-spoken and unassuming. Once misdiagnosed with Multiple Sclerosis, he has become much more cognizant of the challenges his employees and others may face and has become highly involved in charitable causes. One of his famous leadership quotes is the simple but highly insightful remark that “you kind of want to manage a technology company like you’re in the dairy business. If it gets past its freshness date, you have a problem.” He has definitely been instrumental in keeping Apple’s outlook and consumer products vibrant and up to date.

Not really a top 10 list, more a personal list for Williams, but the sentiment rings true. Also on the list, Elon Musk, Larry Page, Melinda Gates, Rupert Murdoch, and Warren Buffett. Interesting reading.