I suppose. I think what I am thinking of is that the C family has a very particular look. How functions are defined, scoping, variable declaration... all looks very very similar in C, C++, Java, C#

Python has a very distinct "look" to it.

ML family (including Haskell, OCaml, F#) all looks pretty similar

Etc. I think Rust is a good example of what you are saying. It steals a lot of the greatest ideas from a lot of languages, but I think of language families as having the same sort of style / feel