How to load multiple json files into a single table?

I have a number of identically structured json files.  I'd like to load them into a single table such that each file is a row in the table.  The table column names should be derived from the 'key' of the json files.

For a single file, I am able to use a simple crosstab and it works.  However, when I try for multiple files using a Directory + Dynamic Input, followed by CrossTab, then only 1 row is created with comma separated values.  What I need is for these to be in separate rows, not concatenated into a single row.

Any help is appreciated.