I always use custom names, typically the handles of my friends and family to party members if applicable:
Nephestia (female protagonist, default)
Garland(male protagonist, except in Final Fantasy IX)
Dexedi (Zidane in Final Fantasy IX)
Melon (male party member with close ties to protagonist)
Frantos (male party member, strong or stubborn)
Punchy (pet name)
Belladonna (female party member, Belle for short)
Layix (male party member with close ties to the protagonist)
Caramia (female party member, typically stubborn or physically imposing)
Kazi (male party member, somber typically)
Surnames are almost always Volkov or Garu or Garo, with the occasional Ramasama if I feel mischievous.
Those are the most commonly used, but I have a few more in case there are more than three female characters or two pets. I also have a list of custom weapon names, town names, and spell names which doesn't see much use outside of Elder Scrolls titles.