| Rank | Reign | Country | Monarch | % Correct |
|---|---|---|---|---|
| #2 | 1952-2022 | United Kingdom | Elizabeth II | 100%
|
| #5 | 1643-1715 | France | Louis XIV | 98%
|
| #7 | 1837-1901 | United Kingdom | Victoria | 93%
|
| #9 | 1926-1989 | Japan | Hirohito | 84%
|
| #4 | 1848-1916 | Austria | Franz Joseph | 64%
|
| #1 | 1946-2016 | Thailand | Bhumibol | 29%
|
| #8 | 1735-1799 | China | Qianlong | 21%
|
| #10 | 1900-1982 | Eswatini | Sobhuza II | 13%
|
| #3 | 615-683 | Palenque | Pakal I | 9%
|
| #6 | 1895-1959 | Johor | Ibrahim | 2%
|