Maybe to clarify what I think inkaneer is saying,
Peter can ordain many bishops. That doesn’t make each bishop that Peter ordains, another Peter, head of the entire Church. But as bishop, they will be head of their respective Church they are bishop of in the line of an apostle, in this case Peter.
JPII ordained many bishops when he was pope. Those bishops then, are ordained in the line of apostolic succession as any validly ordained bishop is. They are not however popes just because JPII ordained them… But they are validly ordained bishops.
To put this another way
Look at the ranking of sees in the 1st century.
*]Rome
*]Alexandria
*]Antioch
*]Jerusalem
3rd century ranking. It’s the same today
*]Rome
*]Constantinople/Istanbul
*]Alexandria
*]Antioch
*]Jerusalem
Rome is always 1st in rank because it’s the chair of Peter. Even when Constantine moved the capital of the empire to Byzantium which was renamed to Constantinople, moving the other sees behind it, Rome was still 1st.