• Mekk-Knight Blue Sky
• World Legacy Scars

• Mythical Beast Master Cerberus
• Mythical Beast Jackal King

• Curious, the Lightsworn Dominion

Extreme Force is also confirmed to have:

• Vendread Cards
• F.A. Cards
• Spirit Monsters
• New Altergeist Cards
• “A cosmically terrifying Flip Theme” (Likely what 4KMedia refers to as Tindangle)
• Link Monsters that power up past Decks. (So far the cards from Link VRAINS Pack)

Source