How does tiered voting stock donated to these companies operate? Does the owner of said stock still retain voting control even though the stock is now owned by the DAF?

There's also an issue with how these sorts charities are privately incorporated which aids in hiding them from public scrutiny regarding how and when funds are spent. For example, a 501(c)3 Organization requires tax forms to be disclosed and available to be audited in order to see all associated expenses. The cost of filing and completing the yearly form is minimal enough not to inhibit any undue stress in record-keeping to follow GAAP, even such that no outside advisors would need to hired in order to file.