Short answer: Maradona's 'Goal of the Century' (1986 vs England) is among the most cited signature moments.
Most-cited 'signature' moments across TenDollarPick: Maradona's Goal of the Century (1986), Pele's 1000th goal, Zidane's 2002 CL final volley, Cristiano's 5 Champions League titles, Messi's 2022 World Cup, Geoff Hurst's 1966 WC final hat-trick, Salah's Anfield catalog, Saka's Euro penalty miss. See individual player pages for context.