Scheme has the lambda special form, predating Python by decades, and its version also allows for multiple parameters in a non-curried way. SICP served as a classical textbook in computer science for multiple generations of students, so I think that a lot of people's first introduction to lambdas as anonymous functions came from Scheme:
https://sarabander.github.io/sicp/html/1_002e3.xhtml#g_t1_00...