Need vendor recommendations for bulk Alumni data enrichment (Employment & Wealth Screening)

Hey everyone, looking for some advice or vendor recommendations from anyone who has tackled a similar data challenge. The Situation: Our leadership team recently tasked our department with a data project: they want to know where all of our alumni are currently working, along with an estimation of their net worth or giving capacity. The Challenge: Our current systems are pretty barebones for older records. For a massive chunk of our database, we basically only have: First and Last Name Graduation Year Degree/Major We don't have current emails, phone numbers, or physical addresses to use as uniq