the dexron II III friction modifiers are for slippage on the clutch materials. the steering will never have any use of them.

Our old cars can use generic clear prestone/walmart/etc power steering fluid in them too - its basic hydraulic oil but is thicker at low temperature, ATF on the other hand is usually thinner than regular hydraulic oil when cold but is pretty much the same as hydraulic oil at full operating temperature.

If you claim not to find type A fluid - then type F is readily available everyday, very similar blending.

I too was once quite confused in this - but eventually just read on the material sheets and followed them - and add to the point that outside of USA you cannot find generic power steering fluid easily (GM spec etc sold on shelves in USA). I can bet you that the entire moroccan fleet of W123 were not using any "lenkgetreibe" oil or fancy power steering fluid. All of them would be sporting blood red ATF.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)