I have never owned anything with a trigger that would qualify. But much can be said for having proper technique.
One very convincing demonstration at a class I took was having the student take his stance and bring the sights on target. The instructor would then place his own trigger finger over the trigger finger of the student. Then the instructor would supply the pressure to fire the gun while the student held on target.
The result was startling, especially for the unskilled students. The rounds were within the small black square at the center of the target. The instructors were pretty good.
I was firing a standard Glock .45 and was impressed with how accurate the gun was when operated properly.
You speak of DAO an DA. I own single action semi autos 3 single action revolvers and 2 double action revolvers I pretty much only shoot single action. I only have shot handgun competition for Cowboy Action. All single action and the trigger goes snick. I have practiced shooting my revolvers double action. Generally don’t like it but I am passable at it.