[af_vet_1981]

Aside from this inaccuracy (Jewish priests by the law are descendants of Aaron, not merely Levites)

What inaccuracy ? I did not write what you wrote.
I wrote Cohenim (Priests).
I wrote that there was a model where:
Israel => Levites => Priests.
Priests belong the tribe of Levi.
The tribe of Levi belongs to Israel.

Using that type,paradigm or model for Catholics, Catholic deacons would be more like Levites than Cohenim (priests) because Catholic deacons assist Catholic priests in some similarity to how Levites assisted the Cohenim (priests).

[imardmd1]

Jesus is my Eternal High Priest, and He is of the tribe of Judah. There is no room for Levitical priests on his staff today.

Let's not get away from the central point. There arer no Jewish-type priests in true Christian gatherings, and never were. Gentile Deacons are not Levites. All the Jerusalem deacons were Greeks, and for a purpose. They were not ministering to the Apostles; the Apostles could find their own way to the table. The deacons were of and ministering to, on their own recognizance, the Hellenic Jews yet in Jerusalem who stayed after their trip to Israel for the Pentecostal feast to follow the Lord, and were without subsistence, AFIK.

In the Gentile Christian churches, the deacons occupied the same post: to see as to the widows and poor, and probably later on, the physical assembly hall plant, as today. Of course, they were not priests in a special role, because there are none in a true Christian assembly. All Christians are priests. All Christians can, with a godly boldness, enter the Heavenly Holy of Holies in prayer and fellowship with the Heavenly Father and His Son. They need no assistance from a mediator other than Jesus for this.