Also, "fame" is rather missing the point ... it's more about their learning and world experience.
Someone like Voltaire is very "famous", but what really counts are his views after having the life experiences he had, which is what we base their worth on.
For example, if Lekhraj Kirpalani has contained himself to giving advice on building a business, working for yourself, creative accounting, social climbing and good public relationship ... I'd respect him and his position based on what he had achieved in life prior to becoming "god" - far more, and far more successfully than I.
Of course, something that interests me is how BKism has learned and adopted many of those qualities, even though they are not specifically "in The Knowledge". And now they aree ven doing business counselling!
Following the British philosophers of his day, Voltaire was a deist but remained good company at dinner. Writing over 2,000 books and pamphlets, many at the risk of his life, there's a lot of thought to quote from. Some which the BKs might agree with
"A good action is preferable to an argument."
"Our wretched species is so made that those who walk on the well-trodden path always throw stones at those who are opening a new road."
Others that they might wince at. On priests of every religious sect, Voltaire said ...
... those who "rise from an incestuous bed, manufacture a hundred versions of God, then eat and drink God, then p**s and s**t God."
Generally he had a good opinion of Hinduism and Far Eastern "natural religions" which, bearing in mind he was alive in the 1700s, that he had a knowledge alone is impressive.