Do You Have a List of All the Prebiotics?

No supplements in the market that I know of. Usually it's prebiotic to increase macromancia. Or fasting or red polyphenols. So raspberry, strawberries, are there specific prebiotics that are best for that string? Um, I have the top of my head. Your list. Walter Tots says, do you have any recommendations on gut microbiome testing that is meaningful? And in particular, anything for Canadians?