Names of youtubers-Luca Dawson, the names all are one word

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Across
  1. 3. like a boss
  2. 4. plays Attack of the B Team
  3. 5. my pet slime Jerry
  4. 6. plays mini-games on Minecraft
  5. 7. the game walkthrough king
Down
  1. 1. Butter for days
  2. 2. the Minecraft Hunger Games master
  3. 8. is called "Fluffy"