Sunnis
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Ostensibly the Shiite Muslims hold this position. However, most Shiites would say that Imams are only important because they continue in Mohammed's trend, which would make Mohammed more important as the starter of the tradition.
Refer to the Related Questions below written by Ibrahim El-Osery:
What are some differences between Sunni and Shiite Islam?
Sunnis vs Shiites and their distribution?
Sunni