I have several pairs of shoes that present an odd situation:
The left shoe cleat placement is fine, but the right cleat cannot be positioned in a manner that
provides any significant clearance between the shoe and the crank arm in the area of the ball of my foot.
Even with the cleat all the way inward and foot not pronated, there is virtually no clearance, and this evolves into an outright rub as time passes.
This situation exists with Look pedals and delta cleats.
However, when I switch to Wellgo pedals (or, Nashbar pedals) i realize about 1/4" of clearance rather than a rub!
The Wellgo pedals are set out from the crankarm by about that distance.

I know I can use extenders, but I only need that 1/4", so Wellgo pedals work out.

I seem to have difficulty finding comfortable shoes, so this solution puts a smile on my face.

Is this a specification that is published anywhere?
I have yet to find it.
Just curious, as always.