Simplify the following text for a Grade 14 native English-speaking person.
Original: Some cultivars of citrus fruits ( especially navel oranges ) , satsumas , mandarin oranges , table grapes , grapefruit , and watermelons are valued for their seedlessness .
Simplified: Some citrus fruits , especially oranges , satsumas , mandarin oranges , table grapes , grapefruit , and watermelons are valued for their seedlessness .