I suppose this means there is not one for a 2018 either

Thank you. I'll give it a try. I'd be interested in seeing results. And, if possible, I'd like to compare your configuration with mine.

To get the "Sport" & "Comfort" I did the changes I wrote in the post you quoted, from 2021. I set the handling as "Comfort" it will show "Comfort" with the blue circles or "Sport" to show "Sport" with red circles.    I personally have it setup as Normal in drive and Sport in S. So when I shift into Sport mode I get the "Sport" with red circles. I don't know why it is not working for you. Maybe try the ForScan changes suggested for the Fusion Sport here. 

any ideas?

Nice upgrade!

No, unfortunately there's no such option. Can this be activated in Forscan? This is not this?  720-06-01 xxxx xxxx x*xx Selectable Drive Mode: 0=disabled, 8=enabled 720-09-01 x*xx xxxx xxxx  

Did you get the "drive control" setting? If yes, change the handling setting to comfort or sport.     

How to get this?

Yes, of course, I understood that.

Hey, when you get the itch, ya gotta scratch it.  Nice car...congratulations.