As-Salamu-Alaykum wa Eid Mubarak,
As Muslims, we are all in whole hearted agreement that Islam is the objective truth and that no religion apart from Islam will be accepted. However, when it comes to defining an orthodox (Sunni) understanding of Islam, according to the beliefs of the Prophet Alayhis Salatu Was Salam and the Sahabah Radiyallahu Anhum, we disagree.
Key among these issues are the glorious Sifat of Allah Azza Wa Jal.
So having thought about the topic for some time, I have come to what I understand may be the truth regarding the schools of Aqeedah, and this will help us conceptualise who is in Ahlus Sunnah and who is not.
Now some of you might ask, who are you? Are you a scholar, or even a student of knowledge? No, I am not. I am a layperson, however the layperson does not and cannot ever do Taqlid in Aqeedah - it is dangerous and can lead to shirk if for example the scholars you follow allow such a thing. Whilst I believe people can loosely adhere to a school/s of Aqeedah, saying that whatever the scholars in a certain school say is always fact can lead to deviation.
With that out of the way, let me lay out how I understand the schools to have developed.
History of the Schools with regards to Sifat (Attributes) of Allah
Here is an outline of the schools, both historically and presently:

In addition, I have also made the following diagram as clarification to how the schools view each other (to my knowledge):
As Muslims, we are all in whole hearted agreement that Islam is the objective truth and that no religion apart from Islam will be accepted. However, when it comes to defining an orthodox (Sunni) understanding of Islam, according to the beliefs of the Prophet Alayhis Salatu Was Salam and the Sahabah Radiyallahu Anhum, we disagree.
Key among these issues are the glorious Sifat of Allah Azza Wa Jal.
So having thought about the topic for some time, I have come to what I understand may be the truth regarding the schools of Aqeedah, and this will help us conceptualise who is in Ahlus Sunnah and who is not.
Now some of you might ask, who are you? Are you a scholar, or even a student of knowledge? No, I am not. I am a layperson, however the layperson does not and cannot ever do Taqlid in Aqeedah - it is dangerous and can lead to shirk if for example the scholars you follow allow such a thing. Whilst I believe people can loosely adhere to a school/s of Aqeedah, saying that whatever the scholars in a certain school say is always fact can lead to deviation.
With that out of the way, let me lay out how I understand the schools to have developed.
History of the Schools with regards to Sifat (Attributes) of Allah
Here is an outline of the schools, both historically and presently:
In addition, I have also made the following diagram as clarification to how the schools view each other (to my knowledge):
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