وَمِنْهُمْ مَنْ لَمْ نَقْصُصْ عَلَيْكَ
And among them are those whose accounts We have not related to you. (Ghafir 40:78)
This verse shows that the class of messengers extends beyond those named in the Qur'an. General belief embraces every genuine prophet, while detailed belief includes specific persons whose prophetic mission is established by reliable evidence.
It is important not to turn an unproven name or total into a certain doctrine. Clear distinction is required between a firmly established report, a probabilistic narration, and a merely historical claim.