Optimizing Company Enrichment Process: Seeking Efficient Solutions

Hi everyone, I'm having Claygent get some info on a company list. The thing is that I update that list daily, and if one company has already been enriched via Claygent, I don't want it to do it again. So far what I'm doing is having all the company names I've already enriched on a Google Sheet and doing a lookup so that Claygent only enriches the ones that are NOT on that sheet. But it takes forever, because there are over 5k rows to go through on that file -and growing-. There has to be a better way. Can anyone think of it?