I started the other thread but I didn’t mention the ECF in my OP. So I decided to start this thread to specifically address this issue. So I ask you where are the references to the LDS Priesthoods in the writings of the ECF?
Church Fathers - Wikipedia
Early Church Fathers - Christian Classics Ethereal Library
Early Church Fathers
Here is the thing about ECF. But I have to give you some background first.
The highest office of the MP is the apostles. In the first century church, they were the only men that could call elders and bishops and set them apart for their ministry. The bishop was chosen from the elders of the church in a local area, not older men, but men holding the office of elder, holding the MP/royal priesthood.
For instance: Acts 20:17 gives a good example of Paul, an apostle coming to Ephesus and calling a meeting with the elders in the area.
Acts 20:17 King James Version (KJV)
17 And from Miletus he sent to Ephesus, and called the elders of the church.
In the first century church, a man that was called to the office of elder, remained an elder his whole life, even though he might be called to be a bishop later. He would not be offended if he were the bishop, to be called elder. The apostles would not be offended to be called elder, even though they were apostles, and some were bishops. The higher up you go from elder to bishop to apostle, you retain your authority and name of all lower offices of elder, bishop. (1 Peter 5:1)
Even though Jesus was the Son of God, and our Savior, he was also an apostle, and High Priest of the MP. (Hebrews 3:1) and Jesus was also called a bishop (1 Peter 2:25)
So Paul calls this meeting with the elders in the area and just before he departs, he drops a bombshell on them, declaring that their flock would not be spared, but some of these elders in this meeting would turn into wolves and not spare the flock. This came true years later, as Ephesus was warned of Jesus in Revelations to repent or they would be cut off. Apparently, they were cut off, because Ephesus ceased to exist as a major city, and today is in ruins and has been for a long time.
Acts 20:28-30 King James Version (KJV)
28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
29 For I know this, after my departing shall grievous wolves enter in among you, not sparing the flock.
30 Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
So what happened when a bishop died? For a while, one of the 12 would go to that city and ordain another bishop from among the elders and everything moved along.
But eventually, all of the apostles were killed, and it is not recorded in the bible that Peter passed his keys on to any other man, even though the Catholic church says he passed them on the Linus in Rome. That is not true, because if Linus had been ordained to take Peters place as an apostle, he would have declared it so. But Linus was only ordained to the office of bishop of Rome, not an apostle to the world.
Antioch too had Peter as their bishop, but when he left for Rome he did ordain another bishop, but not another apostle.
That is all important because only an apostle could ordain local bishops. As soon as the apostles were all killed, then those bishops who had been ordained could serve out their time as true priesthood holders and bishops, but as soon as they died, so did that bishopric.
So long story to get to your point. The bishops/ECF's that were left when the apostles died, stayed bishops until they died and then their office of bishop died too, not having an apostle to replace that bishop. Their power and authority, the royal priesthood/MP died with them, not having the power to pass on their MP/royal priesthood without the Peters keys of the kingdom of heaven.
So the first generation of bishops/ECF's after the apostles died still had the authority to do bishop duties. But the second generation took upon themselves the title of bishop and were ordained by other bishops which was not the way the preisthood works.
The second generation of ECF's did not have Peter's keys and so their bishoprics did not have the authority or priesthood power to do things that heaven acknowledged.
So over the years, this priesthood died out and became less important, and the offices were changed and the church organization changed, and the doctrines changed, as the apostacy gathered steam year after year.
So what the ECF have to say about the royal priesthood/MP became less and less until MP was not spoken of at all. Practically speaking, they talked about bishops and deacons, and priests, but did not include MP in the discussion because they did not have MP or the keys, and did not know about it, even up to today unless you come across and elder of the Church of Jesus Christ of Latter-day Saints.
So very little discussion from ECF on priesthood.