Ginge, to the best of my knowledge you are totally wrong.

1 wire, 2 wire, 3 wire, 4 wire

ALL give the same signal in every instance Ive seen and the signal wire from any of these should work fine for basic closed loop control.

Its a 0.45 output at 14.7 AFR, and above or below that simply means "rich" or "lean"

I dont know of ANY narrowband sensor that doesnt work that way.

Can you please give a specific example of one which doesnt if you arent just chatting absolute shit about something you know nothing about?