Haha hey @behelen :) What a cool idea and quite good reflection of why you understand several people more and others less.
I think it is because of education - because our teachers are teaching English also with an accent and we adapt this pretty quick as children and dont learn the real "th" and "r" of English. But life is colourful and so is also our languages :) I love the fact that we can understand each other with this global language and that we all have our own accent of this :)

I also can hear if someone is from Germany by his/her accent but I think I understand almost everyone pretty well. You the same good as a native speaker but I have to admit that I have big problems to understand English with an Indian accent - but I try to listen carefully and with some concentration, I can understand them also :)

I had the same habit some weeks ago: writing the content of my videos in the decision but this is working against my aim - people shall view my videos :D so I stopped doing this and felt that more people are watching the videos and react to the content within.

Thanks for this video and this idea :)

I will try to reply to it in form of a German talking videoskit with subtitles within one of my coming videos :)

peace!