List of options, summarized in a different table by month

this is helpful insight @Federico_Stefanato

it seems to imply that once you have a list filled with single items (seperated by a comma) the In() is maybe the way to go, while having a sublist [[sublist1],[sublist2],[sublist3]] Contains() looks like the right candidate.

I would love to understand better when to apply a function.

“Somehow”, because In() accepts a single value search while Contains() searches for sublist within a list, therefore the former should be more performant (it really depends on the underlying implementation: don’t take this as a statement).