Current: Bed, Anvil, Banners, Beacon, Bell, Brewing Stand, Buttons, Cake, Carpet, Cauldron, Composter, DayLightDetector, Dead Bush, Door, Dragon egg, Enchanting Table, End Frame, Fence Gate, Azaleas, Flower Pot, Grindstone, Heads, Hopper, Lectern, Pistons, Pressure Plate, Shulker Box, Spawner, Stonecutter, Turtle Egg, Vine, End Rod, Lever, TripWire(String and Hook).

!Some of the waterlogged blocks

There's my waterlogged redstone mod: /mod/redstone-underwater If you want me to add more blocks to this list, open an issue at https://github.com/dcqout/Waterlog/issues