What’s interesting about the Atari ST (and successors) keyboard that I hadn’t noticed before is that the cursor keys are basically on the same height as the home row. This seems like it would me more ergonomic than the conventional placement at the bottom.
You are right, it was a bit more ergonomic. I remember taking some time to get used to the low cursor keys on PC keyboards way back when I inevitably had to stop using my ST and switch to a PC.
That said, the ST keyboards were notoriously squishy, lacking much in the way of tactile feedback. So many people didn't particularly enjoy them for touch-typing.