Too many to name. In fact, if you reckon all the logically possible atheistic worldviews, the number will be infinite. But even if you only count worldviews actually embraced, there are too many to survey. They range from Marxism (radical socialism) to Objectivism (radical capitalism) and everything in between. Even some supernatural worldviews, like forms of Taoism and Buddhism, are atheistic. I advocate a politically moderate Naturalism and Secular Humanism, but even those have diverse possibilities within them that are still healthily debated. As we are not dogmatists, we do not consider the truth to be settled, but accept and encourage constant inquiry and debate over the correct beliefs to hold.
What are the different types of Atheism?
The Atheist Perspective
Can atheism be viewed as an advanced form of carefully non-idolatorus monotheism (or monism)
Could Christ have prevented his alleged crucifixion? If he could have but didn't, wasn't that suicide?
Is God omnibenevolent?
What do you think of the new book "The Godless Delusion" by Patrick Madrid and Kenneth Hensley?
What is Takeyya? Is it okay for Muslims to lie?
Atheist Humanism: A Very Short Introduction Stephen Law Atheist Proving History: Bayes's Theorem and the Quest for the Historical Jesus Richard Carrier Atheist God Is Not Great: How Religion Poisons Everything Christopher Hitchens Atheist Not the Impossible Faith Richard Carrier Atheist Why I Am Not a Christian: Four Conclusive Reasons to Reject the Faith Richard Carrier Atheist Hitler Homer Bible Christ: The Historical Papers of Richard Carrier 1995-2013 Richard Carrier Atheist Atheism: A Philosophical Justification Michael Martin Atheist The End of Faith: Religion, Terror, and the Future of Reason Sam Harris