What do you think about the work of the Freedom from Religion Foundation? You have seen Ron Reagan's ad for them on TV, I'm sure.

I contribute to Planned Parenthood, the ACLU and other organizations that are oppressed by the religious establishment. I disagree with regard to showing respect. Lack of civility in today's society is resulting in extreme factional positioning. Respect for each other is the main ingredient in solving this problem. We may not be able to win the war against religion, but we might be able to stop the oppression of anti-religious thinking and more firmly establish our right to freedom of conscience. We all really can get along.

Your question is US specific, but I think very rich respectable people, I'm hoping there are some left, coming out and promoting atheism or non belief would be a very good . Problem is, very rich usually pretend to like religion. It looks good with "the little people". The PR isn't good if they come out as non religious. Look at Bill Gates, whom I don't care for. Famously said, I might as well believe in God.....Thanks Bill. He never had a principle that didn't have a $. Politicians too, generally. It's one of the last bastions: influential people coming out and promoting the struggle against religion. As for despising religion, I stopped being superficially polite long time ago. I will tell them they have the right to believe in whatever religious nonsense and rubbish they want, but not the right to respect of belief, or the right to tell me I cannot say what I think about it. I agree with you, it's time to stop being polite, at least on the issues.

This list makes interesting reading, not sure of accuracy, it has Donald Trump as an anti religious celebrity.
[bibleblender.com]

I seriously doubt any big foundations or institutions are there supporting atheistic cause.