Oh, here is one more term you can consider: "AliasPack"
In Python "splatting" is called "unpacking" ("splat" refers to the visual impression of the "*" operator and is inappropriate).
C++ also have related use of the word "pack": http://en.cppreference.com/w/cpp/language/parameter_packSo in C++ all of the terms "list", "sequence" and "pack" can be used about parameter lists… but "list" is the general term: argument list, parameter list, initializer list etc…
