Cannot use excel tables (formatted, with design) defined on worksheet for templating

are only named datasets supported or should the usual tables defined on a worksheet work?
using tables would be cool - adds styling (odd/even row, header, filtering...)

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same setup
2x2 data range (although I don't like that the service row is mandatory)

same range
once defined as named dataset
another time as a table with header (but the header row isn't part of the dataset)

yes, i have both Children and ChildrenTest List object to use...