Yes AROS One 68k should be ABI-v1, this is proved by the fact that it is in the page dedicated to ABI-v1 systems
https://aros.sourceforge.io/nightly1.phpYes German Keyboard Layout works well, but Italian, Spanish, French and other languages have a partial translation (see screenshot), Wandererer is not translated, even some system apps are not fully translated.
Also, the Italian keyboard is unusable, many characters don't work and others crash the system, try typing the two points
:, the keyboard will crash.