| Clue | Source | Date |
|---|---|---|
| Heads of government | ||
| State leaders | ||
| Some Cabinet heads | USA Today | 10 Aug 2022 |
| Leaders of Canadian provinces | New York Times | 26 Feb 2020 |
| Certain heads of state | The Washington Post | 23 Oct 2016 |
| Some heads of state | Wall Street Journal | 11 Apr 2016 |
| Lenin and Stalin, e.g. | ||
| Heads of state | ||
| Lévesque, Peckford et al. | ||
| Salazar, Dupong, Thors, etc. | ||
| Hoxha, Drees, Mossadegh. | ||
| Pella, Hoxha, Laniel. | ||
| Chiefs. | ||
| Chen Cheng and Chou En-lai. |