I don't think that there is another game on the Wii that has all the elements of RE:4.
These might have some but not all:
Dead Rising - uses the RE:4 engine.
The Godfather - 3rd person with shooting elements.
Obscure - cheesy horror.
Manhunt 2 - 3rd person horror.
They are all reasonably cheap so maybe worth a look but don't expect RE:4 quality.