Request to Exclude Multiple Tables in Company and People Search

request: excluding more than 1 table from the search in find companies and find people. I've been trying to find Net new contacts for clients and it always take ridiculously long cause I have to import 50 k and then do multiple table look ups which can take a whole day sometimes if i do 2-3 tables+ - only to get 5 unique which is super depressing sometimes. You multiply this across 4-5 clients and my workflow is at a halt!!!! Inspo from apollo "exclude list" feature if that helps. that would cut down a lot of list building time and increase list quality. Thanks