Fiori Overview Page Card annotations

Dear experts,

I have been trying to display HCP IoT data on Fiori OVP Cards but don’t seem to be able to find a complete reference especially of the UI.ChartDefinitionType. Specifically, I cannot replace the table column names with labels as highlighted below:

Is there a complete annotation reference with detailed examples? I checked the official Annotations Used in Overview Pages documentation, but that does not seem to go into that level of detail. Please find my annotations file attached.

Many thanks for any help in advance

Frank