question is 1) how and when was the current format of oosool e diin and furoo e diin formedvarious ahaadiis and aayaat point out to the same but the current format was not designed by masooms2) how much right or wrong can it be (not the belief, I mean the order of placement)3) why is it not biddah if it was comprised later on 4) as Adal is a part of Tauhiid why is it mentioned seperate5) as Imaamat is a part of Nabuwat why is it mentioned seperate

There are even more things that are essential belief of religion than the ones commonly mentioned. These 5 and 10 usul and furu e deen are just the ones that are commonly known and mentioned which are extracted from our ahadith of the imams (as).