Virginia Business has historically published a list of donations by companies, individuals and family foundations (the "Generous Virginians" project), but it appears they are no longer updating it. Linked below are the most current iterations, from 2018.
"Our mission is to develop and disseminate high quality data on nonprofit organizations and their activities for use in research on the relationships between the nonprofit sector, government, the commercial sector, and the broader civil society."
From the Urban Institute.
Independent Sector is a nonprofit advocacy group. While we do not maintain a membership, many of their resources on nonprofit leadership and governance are available free of charge.