Grapefruit varieties are categorized mainly by their color and flavor. The most common types include White Grapefruit, known for its tartness, and Pink Grapefruit, which has a sweeter taste and is often more popular. Ruby Red Grapefruit is another well-known variety, celebrated for its deep red flesh and juicy sweetness. In addition to these, there are also less common varieties like Star Ruby Grapefruit, which has a vibrant color and rich flavor, and Oro Blanco Grapefruit, a hybrid that is sweeter and less acidic. Each variety offers unique taste profiles and nutritional benefits, making them versatile for consumption.