Oh, I'm pretty comfortable that I'm knowledgeable enough about why a Christian would refer to themselves as "fundamentalist" to assume a pretty predictable set of "fundamentals" of them.

And I'm knowledgeable enough to know when a group is rather "fringe". You pick up on these little details when you've had theology classes for 25 years of your life.

I'm not denominational. I am officially part of what the fundies used to refer to as the "unchurched". If you want my history of church attendance and affiliation I could give it. But as little as you know of Christianity, it wouldn't mean much to you.