Not sure I understood your reply.That you have just too few samples? How did you get them (IIRC, my smartphone does not send anything back)? Can the car measure what's going through the charging cable (in contrast to what's stored in the battery)?
These are top 6 consumption ranking from the website (the premium version will allow you to sync data to the website).
I would conclude several things.
Ioniq seems to be the most efficient model in terms of consumption (no big surprise there).
jarhuh (Ioniq 38) has the best overall consumption (over +8000kms logged, so it should be consistent)... But he's third on the wall-to-wheel (consumption excluding regen braking).
That mean there might be room for improvement (difference is only 1.6kWh/100km).
jferreira (Kona 64kWh) for instance is doing very well, but with around 8.6kWh/100km of difference between consumption and wall-to-wheel consumption he's using regen breaking heavily.