NumericalAxis
The NumericalAxis is used to plot the numerical values to the chart. NumericalAxis can be defined for both PrimaryAxis and SecondaryAxis.
More details on WinUI Polar Chart Numerical Axis documentation
CategoryAxis
The CategoryAxis is an indexed based axis that plots values based on the index of the data point collection.
More details on WinUI Polar Chart Category Axis documentation
DateTimeAxis
The DateTimeAxis is used to plot the chart with DateTime values.
More details on WinUI Polar Chart DateTime Axis documentation