Poseidon

This datapack makes villagers and zombie villagers drop spawn eggs. It's great for transporting those mobs.

Make tool progression in Minecraft more linear

Make armor progression in Minecraft more linear

This is combination of Linear Tools and Linear Armor

This makes the wither drop three wither skeleton skulls in addition to a nether star. It's perfect for wither farms, or just to remove a tedious task.

This pack makes bedrock craftable and adds an enchantment to break it in survival.

This pack adds a crafting recipe for light blocks, allowing illumination in your survival world.

This pack adds a crafting recipe for barriers to the game, along with an enchantment allowing your pickaxe to break them.

This pack adds crafting recipes for all of the infested blocks.