You're probably right about the raw onions, I should have tried raw garlic instead, I read about the garlic a lot more. It's just that I do like the taste of onions, haha.
The 'lightest to heaviest' I described was mentioned in the book 'The Beauty Detox Solution' by Kimberly Snyder. She believes in Candida, but her diet is different from the typical anti-Candida diet. This diet is what helped me the first time around, when I didn't even know anything about Candida. But it's not helping me this time around. :(
Which is why I think I will pick up the book you've suggested. Thank you so much! :) I've also heard a lot about the 'Body Ecology Diet' book though, on this site, so I'll just have to look into which one I should read first.