This is a great list of prebiotic-rich food and probiotic-rich food. Prebiotics are mostly soluble fibre that feed the probiotics that are already inhabiting your gut. Probiotics actually introduce probiotic strains, some of which may be non-existent or in short supply.
An interesting fact about prebiotics is they actually enhance the absorption of calcium and therefore improve bone density!
Prebiotic foods not on the list above include; dandelion greens, chicory (a coffee substitute) and bananas. Raw food are higher in prebiotics than cooked.
The trouble with prebiotics is they can exacerbate problems for anyone with SIBO (small intestinal bacterial overgrowth) as they will feed the wrong type of bacteria as well as the good and that will not be comfortable! Also anyone following a FODMAP diet for IBS or other symptoms, may react with more symptoms using prebiotic foods.