I like these types of articles.

One note:

> Access to extra characters

For German keyboard layouts, there exists „Erweiterte Tastaturbelegung 1“ standardised in DIN 2137-01:2023-08. It's available in Windows 11 (since 24H2) and also in Debian Linux for example. It lets you enter all characters from European alphabets plus some nice extra ones. <https://de.wikipedia.org/wiki/E1_(Tastaturbelegung)> has the details.