PeopleLinx Affiliation Filter (PAF)
Enter a list of people separated by commas and a list of companies / organizations separated by commas. PAF will use Wikidata data to find affiliations between the first list and the second and present you with a list.
I have checked 125 people against 75 companies at a time and it works but you’ll need to wait several seconds for the names to be sorted. Make sure you enter possibly-ambiguous company names correctly — Steve Jobs will not match Apple but he will match Apple Inc.