This could do with a bit more time. Didn't even get on to the mandarin section - also put the ones with less overlap with other categories further up so we know we have to move quicker! I assumed it would just be European ones so took my time thinking I was nearly done when there was Arabic + mandarin hiding at the bottom to finish :(
I'm not "hiding" anything. I did not write anywhere that it is all gonna be European languages so I do not know how you would assume so and blame it on me. Maybe don't use your own "common sense" to assume anything next time.
English, French, Portuguese, German, Italian, Dutch, Russian: https://en.wikipedia.org/wiki/Geographical_distribution_of_(Language)_speakers
Spanish, Arabic: Jetpunk Quiz
Mandarin: Ethnologue
Saudi Arabia pop: 30.77m, Arabic speakers: 27.18m
Iraq pop: 36.00m, Arabic speakers: 22.91m
Yemen pop: 23.83m, Arabic Speakers: 14.67m
https://www.tarjama.com/how-many-countries-that-speak-arabic-around-the-world/