Thanks Respected Brother for your explanation. Would it be fair to say that a Momin, reaches a better level of conviction and behaviour?
Just one more point, if I may.
Prophet Noah (pbuh) asks for no reward from his people, he states that he is one of the Muslimeen (10:72)
Prophet Solomon's (pbuh) letter to Sheba requesting her in the name of the Lord to abandon her blasphemy and for her to surrender with her people and become one of the Muslimeen (27:31)
Prophet Solomon (pbuh) acknowledged his own state as being one of those of the 'Muslimeen' (27:42)
All but one house from the people of Prophet Lot (pbuh) submitted to God (Muslimeen) (51:36)
Prophet Abraham (pbuh) was one who submitted to His Lord (Musliman) (3:67)
Disciples of Prophet Jesus (pbuh) confirm that they submit to God (Muslimoon) (3:52)
Prophet Joseph (pbuh) prays to his Lord to die as one who is a 'Musliman' (12:101)
Prophet Jacob's (pbuh) children at the point of his death professed that they submit to God (Muslimoon) (2:133).
Even the magicians of Pharaoh called themselves muslims once they had seen the signs given to Prophet Moses (pbuh) (7:126)
Why did the above not desire to be Momins rather than Muslims? Would being a Momin involve belief in the the blessed Messenger Muhammad and the Final Revelation?