I have the following choices at supermarkets/hypermarkets in France :
SP95-E10 (your 91)
gazole/diesel
Tough choice
Sure, in Germany I could throw money out the window and fill with petrol 98 (your 93) or even 102 (your 97), but why lol.
Honestly, despite a heavy tarted-up motor (205ch out of 1,6 litres displacement), it's a waste to go beyond 95 RON/ 91 AKI. But would have been interesting to see what the F-150 Ecoboost makes out of the two tiers of premium petrol.