| Verfasser | Häufigkeit |
| Opel, Hans |
9 |
| Opel, Heinz von 1943-2006 |
6 |
| Hahslach, Karl-Heinz |
5 |
| Opel, Adolf 1935-2018 |
3 |
| Opel, Helmut |
3 |
| Opel, Manfred |
3 |
| Adam Opel GmbH |
2 |
| Beck, Julian 1925-1985 |
2 |
| Hein Bennett, Beate 1945- |
2 |
| Oberender, Thomas 1966- |
2 |
| Opel, Anna 1967- |
2 |
| Opel, H. O. |
2 |
| Opel, Hans Heinrich |
2 |
| Opel, Manfred 1938- |
2 |
| Opel-Götz, Susann 1963- |
2 |
| Alessi, Ralph 1963- |
1 |
| Anderson, Nancy |
1 |
| Aubin, Hermann 1885-1969 |
1 |
| Bey, Sadiq |
1 |
| Byron, Don 1958- |
1 |