What graph control in WPF has an analogue of SplineRange from WinForms.Chart?

Question

WPF

They asked one application to rewrite from WinForms to WPF. Everything rested on the fact that I need to draw a graph, which in MS Chart is called SplineRange. OxyPlot, LiveCharts, InteractiveDataDisplay.WPF and others from the Google top do not have this. Are there any free ones anywhere?
SplineRange - in my case it is necessary to paint over the area between two curves.
Or only use Chart in WindowsFormsHost?