Playwrights, screenwriters, journalists, and novelists have long sold the idea that strict evangelical homes have produced a lot of atheists. Those children were disillusioned, have seen through the hypocrisy and charade, and they know the real score. I have run across this in conversation about Catholics as well, but have not seen it in media as much, so my personal experience may be influenced by growing up in a disproportionately Catholic community, a northern mill city. Social media is overrun with people who will tell you why you shouldn't believe, many of them angry and disdainful, but they do not represent the majority of the non-religious.
Ryan Burge of Graphs About Religion has written extensively over the last few years about the non-religious in America, and after surveying the Nones, a hefty 12,000 of them, divided them into four categories: Nones in Name Only, Spiritual but not Religious, Dones, and Zealous Atheists. He looked specifically at their religious upbringings and found patterns. Different types of upbringings produced different types of non-religious people.
Because I often look for heritability explanations, I will note that he does not include anything like personality types as possible confounders. Parents provide both genes and environment after all, an a certain personality type of parent might not only environmentally influence the religion of their children, but pass along a disposition toward a certain style or approach. But Burge isn't touching that, at least not at present. He's already generating an 8x8 matrix for his surveys, broken down into a number of 4x4 questions, and one has to draw the line somewhere.
The Nones Project is three related surveys, beginning with religious upbringing and continuing with beliefs and what their level of well-being is. Graphs and more graphs! Bright labeled colors!
Bsking gave me a months free subscription, so lots of this might be behind that paywall. Let me know and and I'll see what I can piece together for you.