If the full-twisting double tuck has any challenger to the throne of uneven bars dismounts, it’s the double layout—also dismount of reasonably difficulty and stick-ability that earns the ever-sought D value. It is typically the #2 most popular dismount in higher level international competition, though this tends to vary by country and program. Chinese gymnasts are more likely to go for the double layout, while American gymnasts are more likely to go for the FTDT.
Also, it’s better than the full-twisting double back. Fact.