i am not taking anyway out, i described what i understand, Shahadah makes a person muslim, denying fundamentals of religion disqualifies from being muslim, one of which is Khatm-e-Nabuwwat or claIMING TO be a prophet.
As for making an all inclusive list of other things, thats beyond the scope of this thread or me.
A "Muslim" is one who believes in:
1. the Oneness of Allah.
2. all His Angels.
3. all His Books.
4. all His Prophets.
5. the Day of Resurrection.
Simple....
Then there are 5 pillars of Islam :
Affirmation of the creed:
There is none worthy of worship but Allah and that Muhammad is His Apostle.
Observance of Salat (obligatory Prayers).
Paying of Zakat (poor rate).
Observance of Saum (Fast) during Ramadhan.
Performance of Hajj (pilgrimage) to Mecca.
Then there are following references:
The Holy Quran describes the righteous Muslims as:
Who believe in the unseen and observe Prayer, and spend out of what We have provided for them; And who believe in that which has been revealed to thee, and that which was revealed before thee, and they have firm faith in what is yet to come. (2:4-5)
There's a hadith in Bukhari:
Whoever offers his Prayers as we do, and turns his face to the Qibla to which we turn our faces and partakes of our Dhabi ha is surely a Muslim who is under the protection of Allah and His Messenger; Therefore, violate not the guarantee granted by Allah.
(Bukhari ,Vol. 1, Bab Fad l Istiqbalul Qiblati)
There's another hadith:
'Umar ibn Khattab relates that they were sitting in the company of the Holy Prophet (saw) when suddenly a man arrived. He was wearing clean white clothes, and his hair was jet black. He did not look as though he was a traveler, and he was not known to anyone there. He sat down close to the Holy Prophet , his knees touching the knees of the Holy Prophet . He said: "O Muhammad (saw), Tell me something about faith." The Holy Prophet replied: "Faith is that you should believe in Allah, His Angels, His Books and His Prophets; that you should believe in the Day of Judgement and you should believe in the Divine laws regarding good and evil."
( Tirmidhi Kitabul ‘iman Bab filwasf Jibril annabiyyul ‘iman wal Islam)
Imam Abu Hanifa says:
"Whoever intends to enter the fold of Islam, let him solemnly declare and believe that there is none worthy of worship but Allah and Muhammad is His Messenger. If he does this, he is surely a Muslim even if he is unaware of the fundamental injunctions of Islam."
(Commentary of the Fiqh-i-Akbar by Imam Abu Mansur Muhammad Bin Muhammad Hanifa, p 34)
I think this is enough reference for you to understand who is "Muslim" according to Quran and Sunnah. And by the above definition, we Ahmadies are by GOD MUSLIMS as we believe in:
"AMANTU BIL-LAHI WA MALA'IKATIHI WA KUTUBIHI WA RUSULIHI WALYAUMIL-AKHIR' WAL-QADRI KHAIRIHI WA SHAR-RIHI MINAL-LAHI TA'ALA WAL-BA'THI, BA'DAL-MAUT".
"I have faith in Allah and His Angels, His Books and His Messengers, and the Day of Judgement and that all good and evil and fate is from Almighty Allah and it is sure that there will be resurrection after death"
And we believe in each and every word of Quran and that it is the word of ALLAH in its pristine form and that it was revealed to the Chief of the Prophets, the pride and the crown of the Messengers, whose name is Muhammad Mustafa and Ahmad Mujtaba (saw).
We believe in angels, the resurrection, hell and paradise. We observe the prescribed prayers and the fast.
We turn to the Qibla for prayers and forbid ourselves what is forbidden by God and His Prophet and permit ourselves what is permitted.
We add not a thing to the Sharia, nor subtract any thing from it. The Sharia is above change. Whatever has come down to us from the Holy Prophet (on whom peace and God's blessings), all that we accept, whether we understand or not and whether we can unravel its secrets and real meaning or not. We are believers with the Grace of God, and strict monotheist Muslims.