Sigh. It's not arguing, just correcting a misperception that may confuse people.
Bounce in irons is controlled trough manufacturing and consistent throughout the set. Most forged sets start at 2-3* (at 3 iron) with a single degree increment change until PW/GW, which is usually at 12*. Forged clubs will have a step variance of 1-1.5 degree in the 6-8 iron and then a similar step in the 7-9 irons to blend the set. Cast clubs normally have larger soles so have a larger bounce, usually starting at 4-5* (at three iron) and progressing at 1* to 12* at PW.
Manufacturers do not create sets with additional bounce without creating custom castings of the club or doing complete regrinds on soles. This is extremely time consuming and expensive depending on the process. See Cobra and the work they did with Bryson DeChambeau and why other manufacturers show no interest in sponsioring him. The bounce for sets will be controlled through the size and depth of sole, but the actual bounce remains consistent as per the manufacturer's specification at time of casting or forging. For example, Cobra created custom heads for DeChambeau with more sole to create more bounce. Swing adjustments can be made which affect bounce, but then have other ramifications on other performance characteristics of the club a player does not usually desire. You're not getting a club with more bounce, you're creating bounce by altering the club and swing and living with the negative consequences of the alteration. This is no different than throwing any club wide open and using a shallow flat swing. The bounce on the club remains the same, you've just created more bounce by changing the contact point in relation to trailing edge of the sole.
True bounce, the angle of the base of the sole to the leading edge of the club, is not something done through the entirety of the set. It is why you don't see iron sets advertised with bounce, or the bounce labeled on the club itself. You only see this in wedges because wedges are manufactured with different bounce characteristics and clearly stamped with those variations.
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