| Classical Antiquity Studies | 10 |
| American Constitutional Law and Politics | 6 |
| Lymphoma Diagnosis and Treatment | 5 |
| European history and politics | 5 |
| History of Science and Medicine | 4 |
| African history and culture studies | 4 |
| Historical, Religious, and Philosophical Studies | 4 |
| Historical and Religious Studies of Rome | 4 |
| Theatre and Performance Studies | 4 |
| CNS Lymphoma Diagnosis and Treatment | 4 |
| Historical Studies and Socio-cultural Analysis | 3 |
| Italian Fascism and Post-war Society | 3 |
| Communism, Protests, Social Movements | 3 |
| Race, History, and American Society | 3 |
| Chinese history and philosophy | 3 |
| Diverse Historical and Scientific Studies | 3 |
| Academic Freedom and Politics | 2 |
| Byzantine Studies and History | 2 |
| Insect and Arachnid Ecology and Behavior | 2 |
| Asian Culture and Media Studies | 2 |