There's a city-level law in Santa Cruz (California) that levies a punitive tax on beverages that contain added sugar. It's weird in a couple of ways.

"All-natural juice" is exempt, and it's defined by whether the sugar is "added". So if you combine 20 gallons of orange juice and evaporate the water away until it's reached the concentration of sugar you want, that's fine; if you get one gallon of juice and add sugar until you've reached the same concentration, you're subject to the tax. Oranges contain enough sugar that this is viable for orange juice. Limes don't, so limeade is taxed very heavily while orange juice that contains the same amount of sugar is exempt.

Milk products (dairy or imitation) are exempt, and they are legally defined by the first ingredient (for milk) or first two ingredients (for imitation milk). Chocolate milk isn't a sugar-added beverage, because it's a milk product. Eggnog is a milk product too.

This second point seems to explain why it's important for companies to manipulate which ingredients are listed first.

There's really no chance of misleading the consumer, because right above the legally-mandated and legally sensitive ingredients list you'll see the legally mandated and not legally sensitive nutrition facts, which will tell you that eggnog is about 17% sugar by weight or that, to use the example here, Smucker's strawberry jam is 60% sugar. ( https://www.smuckers.com/fruit-spreads/jam/strawberry-jam )