I am aware of a vagal and adrenal A-Fib.
I feel for me and i too am paroxysmal, I have a little of both.
Sounds to me with your GI issues its a lot of vagal for you since vagal nerve is related to digestion..
Yes we are all different what works for one does not work for another.
I am a very disciplined person doing boxing, martial arts etc. I try to attack or game plan a situation. If you have read any of my other posts I express so much frustration with A-Fib because there is at least for me NO game plan to work on it it seems to have a mind of its own. Sometimes its one trigger at other times another. So frustrating. Or as I always lament no rhyme or reason to it.