It varies, I’m particularly thinking about different philosophies of science. Some examples:
- TEs and atheists will probably find more common ground in methodological naturalism
- OECs, TEs, and atheists will find common ground in a basic belief that science can tell us something real about the past. They don’t tend to split things into “historical science vs observational science” like YECs tend to.
There are obviously major differences between all theists and atheists, but it’s hard to hold a conversation when there is virtually no common ground to build upon, which was my point.