Is there anywhere where I can find definitions or descriptions of these grouping game categories? These four are categorized by 7sage but I've gone through the CC & I can't find any description.

Grouping pure:

Grouping sequence:

Grouping repeating:

Grouping - Interchangeable:

Example for grouping repeating games: I know that I will have to group items and those items are repeating. Hence, using a chart will be most helpful.