Minecraft wiki entry for Ender_Dragon, associated text: Barrier
Bedrock
Command Block
Crying Obsidian
End stone
End portal (block)
End portal frame
End gateway (block)
Iron bars
Light Block[needs testing]‌[upcoming: JE 1.19]
Obsidian
Reinforced Deepslate‌[upcoming: 1.19]
Respawn Anchor
Structure Block