Most languages have incorporated something of FP. From cosmetic map and filter functions, to type checking were there was not much — in Python: Pydantic, mypy,

Most languages have incorporated something of FP. From cosmetic map and filter functions, to type checking were there was not much — in Python: Pydantic, mypy, pyright, etc. — to better versions of js with types (TS). In this sense, the influence of FP has been great. IMHO it would be more productive if you defined what definition of FP you are using, because it seems very broad. As for what is trendy, I am afraid I cannot help there.