Kinesis Advantage. Like the rest, it has no special functions so I leave an Apple keyboard shoved under the monitor in case I need to hit mute real quick or something. (Yes, Advantage is infinitely programmable, but I can't be bothered.)
The WASD code keyboards work great with macs, they are the standard issue at my office for employees who want mechanical keyboards.
Kinesis advantage with karabiner elements to remap caps lock to delete, backspace to control, delete to cmd. Makes using emacs a dream.
Any keyboard. At first it's strange but I tend to have blanks anyway so I kind of just adapt.