2most often refers to Walter Lippmann (1889–1974), American journalist who coined 'stereotype'; or Gabriel Lippmann (1845–1921), Nobel-winning physicist of color photography
Walter Lippmann's 1922 book 《舆论》 (Public Opinion) introduced the modern political-science sense of 'stereotype' (刻板印象) and is foundational to media studies. The transliteration tracks the syllables: 利 (Li-), 普 (-p-), 曼 (-man).