> When reciting the alphabet German school kids don't add the umlauts (at least I didn't – I don't think that has changed in the last decades) and if you ask someone how many letters the alphabet has they will answer "26" without hesitation while in Sweden they are treated as distinct characters of the alphabet in every sense.

Meanwhile, the Swedish alphabet has 29 letters. Since 2006. Before 2006, "W" wasn't considered a letter of the alphabet, since it was just a double "V", and only existed in German and English loan-words and names.

So before that, this would have been the correct sort order of some names: "Valter, William, Viktor", but these days they would probably be sorted like "Valter, Viktor, William"