How to dynamically change some or all the Columns of lens in CRM Analytics Dashboard based on the selection in list selector?

You can create a static query for grouping for list filter, something like this

Then in your table add the selection binding.

q = group q by ({{column(Dynamic_Grouping_1.selection, ["Text2"]).asObject()}});

q = foreach q generate {{column(Dynamic_Grouping_1.selection, ["Text2"]).asObject()}}, sum(q.'Amount') as 'A';