You must provide the model type used for the root type of the key path, i.e. \ModelType.property instead of .property.
Apple uses the following example in the Xcode 15 beta 5 release notes:
@Query(sort: \Person.name) var people: [Person]
In your case it would be something like,
@Query(sort: \Person.id, order: .reverse) private var artList: [ArtInventory]
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Use the .annotation modifier; then, you can use a text view to show the y-values of the data points.