Not really "favourites", but here's my thoughts around the subject:
I have taken periods of changed diet or daily yoga, and I've learned some things from that, but my mistake was not doing proper tracking back then. I really wish I had at least my waist and head ache logs from my yoga and glutenfree experiments; the only things I have from 2016 i heart rate and activity from fitness tracker.
Right now I'm doing the Maffetone Two-Week Test for carbohydrate intolerance. I believe it would show more if I had a blood glucose measurement, but I hope it will show something in the secondary measures (like sleep quality or head ache) when reintroducing carbs again on friday (after two weeks).
For the future, I'm also planning to try out a 30 second high intensity training before any meal with carbs in it. It has been said (on a podcast, not sure which one it was, a recent one from either mindvalley or bulletproof radio) that the body reacts quite differently on the quick carbs after even as little as 30 seconds intensive exercise.
Another plan is to explore the resistant starch, but I think I should start logging the state of my stomach or poo more closely before that.