In my opinion, a true strength build uses clubs. Maaaaybe a mace if you want to be creative, but in DS3, for instance, the big wood club was the most fun. If in elden ring, go for funsies and start as a wretch to get the club, then eventually switch to the grafted greatsword (or whatever it's called) at the weeping peninsula castle that you can get.
As you get to ranni or radahn, just use whatever makes the most satisfying 'WHACK!' sound.