I'm not aware of any Golf/variant that came with the 15 setting slider, 7 or 7.5. Afaik the 7.5 has the same DCC module that's in the 7. It's also the same module (hardware) that's in Passat, Arteon, Atlas, Tiguan, etc.
One difference is in the software, Version A, B or C. I suppose some early MK7s might have software A, but version B is what I typically see when people post a scan. I'm not aware of version C on any Mk7/7.5 Golf.
The other difference is the DCC dataset. The data set "configures" the module for whatever car it's in. Presumably this accounts for things like overall weight, weight distribution, and probably some overall system behavior. For example I would expect the Passat in Sport is not as firm as a GTI in Sport.
In any case, you need to have a data set that matches the software version of the DCC module. So if you're DCC module is version B then you need to load a data set for version B.
However... The data set does not actually have to match your car. I'm now running software C on the DCC module in my Golf. But since software version C is not available on any Golf (to my knowledge) I'm running the data set from an Arteon. Passat is probably closer in weight but the Arteon might be softer (read more Cadillac like, haha) on the soft end.
Besides getting software version C and the data set of your choosing loaded you also need to modify driving profile data set. This is a data set in the Gateway that configures your driving profile settings. Thanks to some excellent work by
@Chillout It is possible to customize this data set, assuming you have a Gateway with late enough software.
I show a summarized version of this, and include links to the relevant info, in my
what did you do today post.