I noted that in the link provided with your text:
“are not manifest in the only wholly inspired substantive authoritative record of what the NT church believed”
On the web page that link goes to, ere is a section:
http://peacebyjesus.net/deformation_of_new_testament_church.html#Development
which is a discussion of distinctive Roman Catholic development of its church hierarchy, and in there is mention how that development, contrary to scripture, kept placing “leader” (continuously) over and above “servant” and how servant (to the flock) is the scriptural mode assigned to the apostles and those who followed them.
And, in that regard, I know from some acquaintance with it, that in the RCA (Reformed Chruch in America) the themes of “servant leader” and “servant leadership” are frequently invoked in matters describing the role of the church organization and those in organizational roles.
That much they have retained from THEIR “traditions” going back to the Reformation movement from which they developed.
I have been with them (I worked for them for awhile), and observed and participated in large gatherings meant to bring folks together on some important matters. There are of course persons known to be in organization leadership roles, but after some opening comments, and some pertinent scriptural reading, and a pastors comments about it, and a period of prayer, the open discussion that followed had no “leaders” other than maintaining order of the discussion. EVERYONE’s statements were accepted with the same respect, and after a day of this the goal was NOT to vote, but to reach a consensus, that all, putting aside their own preferences and accepting that not everything can have priority, could agree to.
It was interesting to witness, as even I, in my first large RCA meeting, was brand new to all but a couple of individuals in attendance (but I had been made known to all of them before hand) yet no one questioned my commenting on anything. In large and small groups, leaders did have organizational roles, but in discussion no one was leader in the sense of above others, all were equal servants striving to do what was best.
My sojourn with them was not as long as they and I first planned, but on a personal level my experience with them was a good one.
Interesting, but right now i have other things to attend to. Later.