Underwater ruins chests generate waterlogged and also generates with a water block on top of it, even on land.

Underwater ruins generates such that its loot chest generates waterlogged and with a water block on top of it, this can be proven by finding an underwater ruin that generated on land, as shown in the picture I’ve gotten from the Minecraft Wiki’s underwater ruins gallery page. Although I’m not sure, but this probably exists in the Java Edition too.