Thanks for your query.
Well, yes, we do not publish Grid controls (Aspose.Cells.GridDesktop and Aspose.Cells.GridWeb) on nuget repository. Currently, we only publish Aspose.Cells library as a nuget package.
I will check with the team if we can provide the Grid control(s) on nuget for the users, we might get back to you. In the mean time, we recommend you to kindly get the required libraries by downloading Dlls version of the Aspose.Cells for .NET package which also includes Grid controls libraries: