I voted for Hitch Dawkins and Harris from the list but I would definitely add Matt Dilahunty

I also like Seth Andrews, but I don't have enough points to add him to the list. I like his podcast called The Thinking Atheist.

Matt Dilahunty Is coming up

I'd add Carl Sagan

I've only heard of half of these.

My favorite atheist of all time would be Mark Twain.

I have not watched a debate that the Hitch lost...still looking...eloquent speaker that I never get tired of listening to. Please add Lawrence Krauss

Influential to society as a whole or influential to me specifically? Because to me specifically it is Richard Dawkins and Neil DeGrass Tyson (swoon). For society, prolly Bill Maher, George Carlin and Bill Nye - because most everyone has heard of them.

Sam Harris and Hitchens were my eye-openers initially. Sam is hit-and-miss lately but I think he can turn it around and get back to more consistency.

Hemant Mehta

I can't really tell if you asking about influential people who are atheists or atheists who are influential. Because I feel like those are two different questions with different answers. Like Tyson and Nye are influential people who just happen to be atheists, their atheism comes second to their influence, but Dawkins and Hitchens are atheists who are influential, their atheism has eclipsed their original influence as scientist and journalist.

I would also add Matt Dillahunty, and the people from The Atheist Experience. Also Seth Andrews from The Thinking Atheist.

For me at least.

I love Christopher Hitchens debates. After I let go of religion I watched most of them. I wouldn't say Bill Maher is influential but being on the liberal side I've always watched his show even as a Christian. I was never one to get offended because of a difference of opinion. Sam Harris is also a very good debater and speaker. I voted for a few others too. This is a very good list.

Where are all the popular atheist youtubers?

So many more great ones that didn't make the list! I would like to offer Eddie Izzard, Craig Ferguson, Penn Gillette, Jim Jefferies, and most definitely Seth MacFarlane. The comedians use humour to make complicated truths easier to understand.

I would like to add Aron Ra and Richard Carrier.