@Jujo this is a good start point. Motor max (phase current limit) will be hit until the duty cycle at which it would cause battery max to be exceeded, then it will begin limiting at battery max as the speed continues to increase.
The first third the limiting factor is motor amps, as you continue to increase rpm then the middle bottleneck is battery current, and finally you reach a voltage bottleneck at the end.
It’s a bit more complicated than that also, because wind resistance goes up steeply once you start going fast, so sometimes the peak of motor output can’t be reached in practice because there simply isn’t enough power to overcome drag, so you may actually only climb halfway across the chart. It depends on your gearing and all manner of other things.