Dear Bubblers,
I am happy to introduce you to our new plugin, XlsxBuilder
It is a user-friendly tool for creating dynamic XLSX files from Excel templates.
It is very easy to customize spreadsheets, you just need to add ${your_tag} into an excel file.
You will be able to pass single data tag like “your_tag” and list item like “parent.children_tag” just setting the Key/value 
.
If you need more flexibility you can add custom Json data 
.
XlsxBuilder offers :
unlimited Xlsx
Set by “add another Key/value”
JSON integration
no API required
time saved
Check out the plugin page: Plugin Page
Good luck!!! 