Table to List for large data set using Macro

Workbook has two worksheets. Have & Desired. The datasets are circa 50,000 rows with a variable amount of MMM-YY columns.

Tried Kutools with no luck.

Not enough VBA knowledge to edit a script like this one:
https://www.extendoffice.com/documen...e-to-list.html

Posted in this form to see if there was a non-macro / VBA solution. Any pointers appreciated.