like how German vowel letters with umlauts (Ä Ö Ü Ÿ) are spelled with an E at the end (AE OE UE YE)
There’s no Ypsilon Umlaut, in fact y basically only occurs in loanwords nowadays, it was used instead of i quite a bit in previous spelling versions and names are conservative, thus those stuck around (Bayern, Mayer, etc).
Then there’s the ß which by now at least has a capital version but the Duden still didn’t get around to changing the replacement form from ss to sz.
You also occasionally see ë ï those aren’t Umlauts but French-style diaresis, signifying that the vowel combination they’re in isn’t a diphthong. Alëuten, Piëch, Zitrön.
There’s no Ypsilon Umlaut, in fact y basically only occurs in loanwords nowadays, it was used instead of i quite a bit in previous spelling versions and names are conservative, thus those stuck around (Bayern, Mayer, etc).
Then there’s the ß which by now at least has a capital version but the Duden still didn’t get around to changing the replacement form from ss to sz.
You also occasionally see ë ï those aren’t Umlauts but French-style diaresis, signifying that the vowel combination they’re in isn’t a diphthong. Alëuten, Piëch, Zitrön.