I don't think Hantuchova had any GS semifinals points when she reached it many years ago.
Word. Wouldn't be surprised if there were a few more who made Top5 without GS Semis. Bottom line is they are only 4 tournaments a year, and you can be incredibly successful without winning/making the final/semi of them.
The Brainless Pusher
Ernests Gulbis, Marin Cilic, John Isner
Gilles Simon, Nicolas Almagro, Tommy Haas, Jack Sock
Kimiko Date Krumm, Tomas Berdych, Michail Youzhny, Daniel Brands
Elena Dementieva, Julia Cohen, Anna Chakvetadze