Comment: Clearly his brother Hyrum Smith

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Clearly his brother Hyrum Smith

"We can find no person who presents a better character to the world when the facts are known than Joseph Smith, Jun., the prophet, and his brother, Hyrum Smith, (Journal of Discourses, vol. 14, p. 203).

After that it is hard to day since Joseph Smith is apparently far above everyone in history - clear back to Adam:

"I have more to boast of than ever any man had. I am the only man that has ever been able to keep a whole church together since the days of Adam. A large majority of the whole have stood by me. Neither Paul, John, Peter, nor Jesus ever did it. I boast that no man ever did such a work as I., The followers of Jesus ran away from Him, but the Latter-day Saints never ran away from me yet." (History of the Church vol. 6, pp. 408-9).