We use the STN-WM55RXEN stand from Samsung. This stand fully meets our requirements.

I would also recommend the Samsung STN-WM55RXEN. For me, the "rotating" feature was not so important, but the slimmest possible design and stowability. The Samsung would suit me best as a compromise (from experience at meetings away from home).

I bought the following stand:
https://www.digitec.ch/de...
It can also be turned, but then the nuts in the holder have to be loosened and tightened again.