| Classifications | Subclasses | Compositions | Main sources |
| Flavonoids | Flavonols | Flavonols, kaempferol, quercetin, isorhamnetin, myricetin | Onions, shallots, spinach, green and black tea, dark chocolate, various fruits, vegetables, nuts | | Flavones | Apigenin, luteolin, tangeretin, nobiletin, wogonin, baicalein | Celery, parsley, some herbs, rooibos tea, citrus species, onion, garlic, pepper, Thai chili, citrus fruits, scutellaria, passiflora | | Isoflavones | Daidzein, genistein, glyciten | Leguminous plants, soybeans and soy products | | Flavanones | Naringenin, hesperetin, naringin, neohesperidin, rutinosides, narirutin, hesperidin | Flavedo of citrus fruits, bitter oranges, grapefruit, tomatoes, lemon, mandarin and grapefruit | | Anthocyanins | Pelargonidin, cyanidin, delphinidin, peonidin, petunidin, malvidin | Berries, cherries, red grapes, currants, red wines, oranges, the black varieties of soybeans, rice, beans, onions, potatoes, cabbage | | Flavan-3-ols | (+)-catechin, (−)-epicatechin, (+)-gallocatechin, (−)-epigallocatechin, (−)-epiafzelechin, (−)-epigallocatechin-3-O-gallate | Green tea, fruits, berries, cereals, nuts, chocolate, red wine | | Minor subclass of flavonoids | Chalcones | Tomatoes, licorice, shallots, and bean sprouts | | | Dihydrochalcones (phloridzin, aspalathin, nothofagin) | Apples and apple products, rooibos tea | | | Aurones | Vegetables and fruits | | | Dihydroflavonols, flavan-3,4-diols | Biosynthetic intermediates of the flavonols and anthocyanins |
| Nonflavonoids | Phenolic acids | Hydroxybenzoic acids, gallic acid, protocatechuic acid | Gallotannins, raspberries, strawberries, blackberries, pomegranate, persimmon, walnuts, hazelnuts, grapes, wine, green and black teas, mangoes | | Hydroxycinnamic acids | Caffeic acid, ferulic acid, p-coumaric acid, sinapic acid | Flesh of grapes, blueberries, kiwis, plums, cherries, apples, coffee | | Stilbenes | Resveratrol | Red wines, grapes, peanuts, peanut products, plums, pine nuts | | Lignans | Syringaresinol, ecoisolariciresinol, matairesinol, medioresinol, pinoresinol, lariciresino | Linseed, algae, leguminous plants, cereals, vegetables, fruits | | Other polyphenols | Curcumin | Turmeric |
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