Building Automation for Collecting Company Visitor Data and HR Contacts

Hey Team! What's the best way to build the following automation?

1.
Collect the list of companies which visit our website. Let's say today company XYZ visited our website
2.
Get the list of people who work at XYZ in the HR department. One person per row in Clay table, so I could trigger further enrichment and outreach

P.S. I know about RB2B and I don't want to use it for a variety of reasons. I would appreciate any guidance!