And just what lay Catholic is qualified to determine that the election of the pope by the College of Cardinals is valid or not?
For that matter, when replacing Judas, they didn’t hold an election.
They claim apostolic succession but set up their own system for it rather than following what they consider Scriptural guidelines.
We have seen over and over again that there are quite a few FRoman Catholics who seem to think that they are more Catholic than the Pope.
So to answer your question, clearly the Über-Froman Catholics.