Which QWERTZ/QWERTY ergonomical keyboard do I want? Split is ok.

My most used shortcuts are speakers-off,mic-mute, F2 and switch input layout. I'm not interested in dvorak.

Without going down the rabbit hole of custom mech keyboards, the Cherry KC 4500 sounds like a good default right now.

@rradczewski
Check https://x-bows.com.
I have been using a Nature for almost 10 years now.
No fluff, solidly built. Only slightly tweaked by reprogramming a few keys.
X-Bows® | The Ergonomic Keyboard Designed by a Doctor

Designed by Dr. Sig to relieve Carpal Tunnel and RSI. Our patented radial layout fixes ulnar deviation for natural, Biomechanics-guided typing comfort.

X-Bows® Store
@rradczewski Seconding @msdeibel. I’ve been using an X-Bows for a long time, changed to a Crystal a few years ago, mostly because it uses standard keycaps and I could swap to the switches I wanted.