Split and stack table

Workflow showing a number of ways that a table can be split into subsets of columns and then stacked
In these examples, there is a table of 20 rows and 27 columns and this is to be transformed into a table of 60 rows and 9 columns, with each column being named using the respective names of the first 9 columns

This shows how to do this by Table Cropper and Concatenate, but also using UnPivot / Pivot and additionally shows ways to rename the columns.

It also, in some cases, utilises components to address some of the complexity.