Peter -passed into glory and no longer on earth
72 - gone
12 - gone
None were infallible.
Yor other point about the in dwelling Spirit allying to every believer has already been addressed.
You seem quite worried about whether Christians agree on 100% of Scripture. They never will. The Apostle Paul addressed this in the Epistles.
As to your point about the catholic denomination ... Assuming a portion are saved, they have the Holy Spirit within to guide them as they seek guidance. true of all denominations. This never means you have a license to distort God’s Word.
In addition to His Spirit, He has also gifted His assemblies with Pastors and teachers to guide and discipline when necessary. Paul addresses this in the Epistles as does Peter.
Many people confuse the two terms
impeccable
and
infalliable.
Acts 1 shows that their office survives their deaths and that others were chosen to fill it. Indeed, the letter from the Council of Jerusalem in Acts 15 was not by the apostles alone but by "the apostles and presbyters." The apostles were already appointing others to share in their authority for the governance of the church.