Kristie Sullivan uses oat fiber in many of her recipes. It gives a lighter texture and she claims has no impact on BG, so uses net carbs of zero in her carb count. Her favorite brands are Lifesource (best price on Netrition, also on Amazon) and Trim,Healthy,Mama. The other brands have a stronger flavor, not as light.
Briana Thomas also has oat fiber in her baking mix (the recipe is on-line if you want to copy it) and then sometimes adds more oat fiber to the recipe. She has been following the THM program for a few years, I have no idea about terms like fuel pull, but her recipes are sugar and grain free mostly low carb.