I have prescreened the product listings on Amazon to assure that they fit the following categories. You may know, from reading labels, about something else that fits, also. If so, please contact me.

Unsweetened soy beverage (Soy "milk")

Soymilk, Vanilla, Unsweetened, Organic, 32 oz.
Soymilk, Unsweetened, Aseptic, Organic, 32 oz.
Soymilk, Plain, Unsweetened, Organic, 32 oz.
Soymilk, Original, Unsweetened, Organic, 32 oz.
Westbrae Natural Unsweetened Organic Soy Milk Beverage , 1 Quart, 32 fl oz
Westbrae Natural Unsweetened Organic Soy Milk Beverage , 1 Quart, 32 fl oz

Other unsweetened "milks"

Oat Beverage, Original, Low Fat, Organic, 32 oz.
Almond Breeze, Unsweetened, Vanilla, 32 oz.
Almond Breeze, Unsweetened, Original, 32 oz. Eden Blend, Rice & Soy Beverage, Original, 3 Pack, Organic, 3/8.45 oz.

Rice Beverages, naturally sweet (unsweetened)

Rice Dream, Original, Classic, Part Organic, 32 oz.
Rice Dream, Original, Enriched, Part Organic, 64 oz.
Rice Drink, Original, 99% Fat Free, Organic, 32 oz.
Rice Dream, Vanilla, Enriched, Part Organic, 64 oz.
Rice Dream, Original, Enriched, Part Organic, 32 oz.
Rice Drink, Vanilla, 99% Fat Free, Organic, 32 oz.

Soymilk sweetened with evaporated cane juice (=sugar)
Most soymilk lists evaporated (or "dried") cane juice as the sweetener.

In a class by itself (sweetened with brown rice sweetener)

Hazelnut Beverage, Original, 32 oz.