A few suggestions:
V 5.0.16 was used.

1. In the Cookbook if you filter by "Pie" or "AddPie" it should show a quick sample. I couldn't find documentation for Pie charts (there was in v4).
2. In V4 I used to have plt.YAxis.TickLabelFormat("#,##0,,M", dateTimeFormat:=False), not sure how it's now handled in V5? Couldn't find details in the docs.
3. plt.Legend.Orientation = Orientation.Horizontal has changed. Couldn't find how to keep this in V5.
4. ScottPlot Demo 5.0.16.exe has no app icon. V4 had a nice one. V4 also shows a URL to the site which is pretty useful but got lost in v5.

This is a gem of a repo!