Re: various 'schools' of thought in Islam
The ahle hadith are also known as wahabis, salafis, najdis. They came about after ibn abdul wahab's killing spree against Sunnis about 200 years ago. Outside the subcontinent they also refer to themselves ahl As Sunnah
A person seen saying Quran and Sunnah, Quran and Sunnah would belong to this group, unless they were laymen just saying what people say
They follow zahiri reading of the Quran and hadith. In this regard they are similar to the protestant movement within christianity
The saudis have funded the growth of this group and its ideology, its unlikely that any of you here is not atleast a bit influenced by them. They have spent heavily and there is no shortage of people willing to forward the ideology
isis, and many terrorists groups belong to this sect. The reason for that is they are given freedom to interpret Quran and Hadith by reading translations.
They do not follow any particular scholar but are influenced heavily by the beliefs of ibn abdul wahab.
They do not follow All Quran and Sunnah. Some things they allow to pass by, or refuse to look into a wider range of opinion. This allows them to stay upon the beliefs of ibn Abdul Wahab Najdi
With regard to traditional Sunnis they despise all traditional sunnis and shias. Prefering to focus attacks on the sunnis (aka sufis) and shias of their locality. So in and around pakistan they would be against all the old groups
Ahlus Sunnah had constructed Mazaars over the Graves of Sahaba and Ahlebayt. However in the last century the british gave palestine to jews and Arabia to wahabis. The wahabis have knocked down the Mazaarat in Medina, and knocked other sites and Mosques. Old pictures are available on the net
They see themselves as Ahlu Tawheed, where as tradition understanding they see as mushrikeen, meaning non muslims. Deobandis are with them on some issues
I think you're trying to say that Brelvis are the orthodox sunnis....others are just sunnis. If so, then I might agree with you on this.