I clocked ⚡ 9/14 ⚡ on the Fluxometer

I've been attempting this one for a few days and haven't managed to complete it before. Quite tough!

[Bracket City] November 10, 2025 🟡 (Medium)

https://www.theatlantic.com/games/bracket-city/

Rank: 🎖 (Mayor) ❌ Wrong guesses: 3 👀 Peeks: 1

Total Score: 89.0 🟩🟩🟩🟩🟩🟩🟩🟩🟩⬜

I don't understand the {last letter in 🇬🇧} clue - any ideas?