Possible Clues:

• 'Yippee for us!' [4th of 7]
• "Yay, team!"
• "Hooray for us!"
• "Way to go, team!"
• "Congrats to us!"
• 'Congrats to us!'
• First three words famously said by Kamala Harris to Joe Biden upon winning the 2020 election
• "Teamwork makes the dream work!"
• Team member's triumphant shout