What you‘re looking for is called a low-profile TKL (tenkeyless aka. no numpad) keyboard. You might also like a 65%, which removes even more keys but still retains the arrow keys.

Thanks, found this:

https://www.reddit.com/r/keyboards/comments/1rvjds0/low_prof...

This one looks great:

https://iqunix.com/products/mq80-aluminum-low-profile-mechan...

Now I only need a tripod to keep my phone at eye height. And a way to run Linux or VNC on my GrapheneOS phone.