For the record: the Global Caché database has an extensive set of codes that appear to be working with the 2023 models well (for the supported functions).

However, my model has a "..." (More) button that opens an actions menu related to the current context. The UI representation is a button with three vertical dots.
I was not able to find a code for this one and learning it from the original remote failed as well - I'm not even sure the button emits an IR signal.

According to the TV's documentation, the button can be emulated by a long press on "[Yellow]" for remotes without a dedicated "..." button, but this doesn't work for my model even with the original remote.

So if anyone has a code for "..." I would appreciate it.

Sebastian