It depends on the game mostly.
Most RPGs, I tend to play as Warrior or Rogue. Very rarely play as a mage or cleric.
But there are few exceptions...
Skyrim : Multi-purpose 'commando' skilled in one-handed, archery, sneaking, heavy armor, conjuration, restoration, and equipment making. Very versatile build that can do almost everything effectively. I'd call this build 'commando' due to its nature and versatility.
Dark Souls series: STR/FTH build with greatsword, bows, and some magic. Dark Souls series is one of the few games where I enjoy swinging heavier weapons.
Overall, I prefer hybrid builds that are versatile and can tackle most situations with varieties of tactics and ways.