If you ask. In the US charities are required to tell you the percent that reaches the cause.

But can I recommend local animal shelters. Local food banks, and local clothing drives especially for children.

Monthly smaller donations help a bunch.

Create your own trust maybe. consult a tax specialist/ fund manager that might be able to keep you charitable trust going longer. Which in return could help future taxes

Glad your willing to share but take care of yourself. You WILL get phone calls with the saddest stories. So set up accounts that you are unable to touch. Treat like the lottery