Yacon. A Peruvian root, it’s a rich source of prebiotics, the food your good bacteria like. It’s naturally sweet but low GI so one of the few sweeteners with Paleo diet approval.
Go for the root syrup, it’s less adulterated. It has a similar taste to blackstrap molasses.
Fake grains. Pseudo grains cook like grains, eat like grains, but aren’t, and include buckwheat, amaranth and the ubiquitous quinoa.