Property Based Flag for List Item Match


I am working on a solution and I feel I am spiraling down the wrong lane for no reason. 

I have a text formatted line item that has the same values as of the name of the list dimensioning the module. I want to flag items in the list which are present in this line item, no matter against which list item.

Here is a mock-up:



I have some solutions but I am not satisfied hence seeking help here. 

Thank you!!


Best Answer