How many early church fathers agree and how many disagree, with the point under contention, that Peter was the first Pope?
That cite of Irenaeus is rather difficult to explain away by saying it’s somehow out of context. He’s saying that the episcopate was handed over from the Apostles, plural, to whom?
Not Peter.
Which you and I may not bring up in the report does not mean it did not happen. You and I may have forgot or it did not have to be brought up.
Sometimes we are taking a piecemeal of a writing to declare something definite where it is not what it was originally stated from the subject context. What is the true purpose of the whole writing. If the main point is titled the successors of Peter and Peter is not declared. Yes strange not to put Peter. But if the argument is not to exactly clarified that fact it is not an absolute that Irenaeus agrees. He did say Apostles ,which Peter was foremost. Suppose he is talking about how the figured out a problem and Peter either has last say or has given delegated authority with the apostles statement. The writing is not clear cut that Peter is not the First Pope either. It just is not stated.