If you choose Family Oriented, you'll get more Whims for interacting with your Family. The Traits you choose will help to determine the Whims your Sim gets. To see information on Aspirations and Reward Traits, click here. Stacking Reward Traits and their advantages is key to making a super Sim, along with the Rewards you purchase with Satisfaction. Be aware that your Sim can have more than these three Traits, as you additionally get one for selecting an Aspiration, and each Aspiration you complete gives you a Reward Trait. They are alphabetized by each category they're found in, just as they are in the game.
This list of Traits is meant to help you decide what would be right for any particular Sim. The Sims 4's Traits system allows you to pick three Traits for your Sim or Pet. The Sims 4 Traits Guide List of Traits with what they do for your Sim