Starting from version 1.20.2, the gamerule drowningDamage is no longer grouped with other damage gamerules in the gamerules menu.
With the introduction of the gamerule enderPearlsVanishOnDeath in 1.20.2 Pre-release 1, the gamerule drowningDamage has been separated from other damage gamerules in the gamerules menu when creating a world. Specifically, the gamerule enderPearlsVanishOnDeath is now positioned between the gamerules drowningDamage and fallDamage.