I think you are mixing things up, no one ever claimed the jamhis to be from Ahlu Sunnah, Major difference between the Jahmis and Ash'aris.
Again, no reference from the Salaf on making takfeer on the sufis/Ash'aris.
Whom ever enters Islam with certainty can not be pronounced a kafir except with certainty. Saying most/ if not all dosent sound too certain...
ah'aris nowadays just deny god attributes like jahmeyya, and anyone who denies them is a kafir
that's what did ibn taymiyyah say about anyone who denies that god is above the throne, which includes nowadays ash'ariyya
(the word مأبون means fu##ed, this is how bad it is)
as for the sufis, i showed you what did imam al-shafi'i say about them, nearly all of them fall into shirk such as worshiping graves and such, and that's easily kufr
