In order to prevent irrelevant chart types, it is possible to add a Document Property (Docprop), which will hide chart types in the overview.

Feature
Add a DocProp by picking the (1) "Custom" tab and add a (2) name to the document property, (3) type in "true" as value and (4) click "Add".

Locate the specific chart you want to hide within ProgramData, e.g. the pie chart.
ProgramData\OfficeExtensions\Content\CorporateCharts\Pie
In the file:
config.xml
Add the following command equal to the DocProp name:
showhidedocprop=Pie
The pie chart will now be removed from the chart overview.
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