No explanation for why you think these churches fit the bill??
I would have to disagree with the "non-instrumental" part and I will tell you why.
When James stood up to speak in favor of the Gentiles not having to obey the Mosaic law, he referred to something Amos said in Amos 9:11-12.
Act 15:16 After this I will return,
and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up:
Act 15:17 That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who doeth all these things.
The crux of the whole dispute at the Jerusalem council what that the Gentiles were to come into “The Tabernacle of DAVID”, NOT “The Tabernacle of Moses”. Keep reading to see some characteristics of the Tabernacle of David, including instruments.
If the Gentiles were to keep the Law of Moses and be Circumcised, then they would be coming in under the Law or antitypically be
coming into “The Tabernacle of Moses”, with its rites and ceremonies, it’s Sabbaths, Aaronic Priesthood, etc.
But the Gentiles were coming into the NEW Covenant, by faith in the Son of David, Jesus Christ and into the Spiritual House, and Priesthood after the Order of Melchizedek. That is, antitypically,
they were coming into “The Tabernacle of David”.
1 Chronicles, chapters 15, 16 and 17 is a great study on this wonderful subject but I will condense and make a few points.
David, in the will of God, established a complete new order of worship in the Tabernacle which he set up in Mt. Zion.
At the time, there were two tabernacles in existence. The Tabernacle of Moses was still in existence in Mt. Gibeon and the Tabernacle of David was at Mt. Zion (1 Chron 16:37-43, II Chron 1:1-13).
There were two companies of Priests functioning in these two different Tabernacles (that existed at the same time).
The Ark of the Covenant, once it was taken out of the Tabernacle of Moses (which at the time had been at Shiloh), never ever returned to the Tabernacle of Moses, but was taken and set in the Tabernacle of David! “The Glory” departed from Moses’ Tabernacle!
In the Tabernacle of David, there was a new order of worship in singing and singers, praise and worship,
instruments of music and continual joy and thanksgiving unto the Lord.
1Ch 16:42 And with them Heman and Jeduthun with trumpets and cymbals for those that should make a sound, and with musical instruments of God. And the sons of Jeduthun were porters.
David actually transferred, “The Holiest of All” into his Tabernacle, while the Tabernacle of Moses at Gibeon had an empty Most Holy Place, having the Holy Place and Outer Court functions only.
Once David offered the dedicatory sacrifices at the Tabernacle of David, there was only “Sacrifices of Praise and Joy”, offered in his Tabernacle after that.
ALL THIS IS PROPHETICAL of what was to take place under Christ in the New Covenant.
At Calvary, the dedicatory sacrifice was offered once and for all. The Veil of the Temple was rent in twain from top to bottom, signifying the transference of the “Presence of God” to a NEW Temple, a NEW Habitation, even THE CHURCH.
In this “Tabernacle of David,” which is the New Testament Church, there would only be offered, “Sacrifices of Praise and Thanksgiving” unto the Lord and there is no mention of banning instruments of music that were present in the Tabernacle of David, a type and foreshadow of the Church.
In this “Tabernacle”, Jew and Gentile would come, through faith in the grace of Jesus Christ.
The tabernacle of David was a type and foreshadow of the church and was in ruins.
"After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up:" (Acts 15:16)
It is as if the Lord were saying, "the Tabernacle of David" is destroyed. I will rebuild it. Only this time when I restore it, I will build the reality of the tabernacle of David -- the Church."
Since the first century, God has been building and man has been building, too. Unfortunately, the work of man is always detrimental to the work of God even when it is done in His name. But, God has had a remnant in every generation.