I also got Singaporean and New Zealand as well as the three native languages (albeit in different ordering) while being a German native speaker. I’d claim it to be mere chance that these are somehow related to standard German sentence structuring, especially the use of the passive in the first few questions.
and my native language: 1. Greek 2. Finish 3. Russian
It is actually German. I am trying to find a pattern here, but i believe these results generated statistically/by machine learning?