All dynasties were evil. There were no saints.
Having said that, interesting to note that Islamic empires never killed people on a large scale. Here's a list from
Wikipedia:
85 million dead - world war 2
40 million dead - Mongol conquests (biggest genocide in history)
100 million dead - Taiping rebellion
138 million dead - colonization of the Americas
25 million dead - Qing dynasty conquering China
40 million dead - 3 kingdoms war
21 million dead - world war 1
-- and so on, the list is pretty big. There's also Hindu king Ashoka's massacre of millions of other hindus.
The only Muslim ruler I can see is Timur, but he was inspired by Genghis Khan (claimed descent from him), killed the same way as Mongols (mountains of skull) and tried to reestablish Mongol empire.
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Not saying Muslim emperors were saints or anything. But then no one was!