It is He (Allah) Who has named you Muslims both before and in this (the Quran) [Ch.22:78]
O you have believed, be pious to Allah with His true piety, and definitely do not die except as Muslims.[Ch.3:102]
Say (O Muhammad SAW): "O people of the Scripture (Jews and Christians): Come to a word that is just between us and you, that we worship none but Allah, and that we associate no partners with Him, and that none of us shall take others as lords besides Allah. Then, if they turn away, say: "Bear witness that we are Muslims."
Ibrahim (Abraham) was neither a Jew nor a Christian, but he was a true Muslim Hanifa (Islamic Monotheism - to worship none but Allah Alone) and he was not of Al-Mushrikun.[Ch.3:67]
(Ibrahim A.S's deen was called Deen-e-Hanif the early face of Islam, Do not consider him a Hanifi Muslim coz, Imam Abu Hanifa R.A was not born when Quran was revealed).
And who is fairer in speech than he who calls to Allah, and does righteousness, and says, "Surely I (myself ) am one of the Muslims"? (i.e., those who surrender (to Allah) [CH.41:33]
Allah's Messenger (peace be upon him) said: There will befall my Ummah exactly (all those) evils which befell the people of Isra'il, so much so that if there was one amongst them who openly committed fornication with his mother there will be among my Ummah one who will do that, and if the people of Isra'il were fragmented into seventy-two sects my Ummah will be fragmented into seventy-three sects. All of them will be in Hell Fire except one group. They (the Companions) said: Allah's Messenger, which is that? Whereupon he said: It is one to which I and my companions belong.
(Tirmidhi Hadith No. 171)
And another very dangerous hadith of Sahih bukhari is as follows.
Narrated Hudhaifa bin Al-Yaman:
The people used to ask Allah's Apostle about the good but I used to ask him about the evil lest I should be overtaken by them. So I said, "O Allah's Apostle! We were living in ignorance and in an (extremely) worst atmosphere, then Allah brought to us this good (i.e., Islam); will there be any evil after this good?" He said, "Yes." I said, 'Will there be any good after that evil?" He replied, "Yes, but it will be tainted (not pure.)'' I asked, "What will be its taint?" He replied, "(There will be) some people who will guide others not according to my tradition? You will approve of some of their deeds and disapprove of some others." I asked, "Will there be any evil after that good?" He replied, "Yes, (there will be) some people calling at the gates of the (Hell) Fire, and whoever will respond to their call, will be thrown by them into the (Hell) Fire." I said, "O Allah s Apostle! Will you describe them to us?" He said, "They will be from our own people and will speak our language." I said, "What do you order me to do if such a state should take place in my life?" He said, "Stick to the group of Muslims and their Imam (ruler)." I said, "If there is neither a group of Muslims nor an Imam (ruler)?" He said, "Then turn away from all those sects even if you were to bite (eat) the roots of a tree till death overtakes you while you are in that state."
Sahih Bukhari Vol 9, Book 88, No. 206
In the light of Quran and Hadith, we should call us only Muslims and we should stick with the group of Muslims not Qualitative names of Muslims and their Groups. Other according to above hadiths all will go to hell except the one who follow Prophet Muhammad SAWW and his Companions and they were Muslims.