I bench bled the iron 15/16" master cylinder that I had on the car before the teardown. It pushed fluid equally in time front and rear. The 2 aluminum 2 bolt units both pushed fluid first at the front ports.
The 1 1/8" master is OEM for the following:

RAYBESTOS MC39178 Specifications
Number of Ports 2
Primary Port Thread A 1/2"-20
Secondary Port Thread A 9/16"-20

The ports being different sizes does show it to have the traditional front to rear, rear to front arrangement.
The Mancini units are manufactured by Strange Engineering and use the same sized ports front and rear.

I'm anxious to find the causes for my crappy brakes and it seemed like I stumbled onto it. Maybe I didn't but it seems strange to have the rear brakes get pressure first.