Traits

Keeping
Distributor - Less likely to turn the ball over when kicking it down field
Sixth Sense - Chance to roll positioning twice and take higher roll
Sticky Hands - Less likely to lose deflected goals
Puncher - Chance to push loose balls into the midfield instead of final third
Antiaéreo - Makes opposing crossing attempts slightly harder

Defending
Shadow - Occasionally more likely to intercept passes intended for their man or prevent great passes to them
Lockdown - Better average tackle roll
Sweeper - Occasionally gets in front of a shot and deflects it
Disruptor - Chance to negatively impact mark's shot roll
Contrattacco - If passing from the defense to the attack, lowers threshold needed for a pass into space (killer pass)

Movement and Passing
Flashy - More variation on dribble rolls
Tactician - More likely to find best pass target
Creative - More likely to pass teammate into open space
Quick - Occasionally rerolls pass-reception roll and takes higher result
Bomber - Slightly more likely to attempt a cross into the box on a free kick attempt
Explotador - Occasionally finds the weakest defender to exploit off-ball

Attacking
Long Range - Lower range difficulty modifier on shot accuracy rolls
Howitzer - Reduces keeper's Reaction on goal attempts; higher on penalty kicks
Curveball - Slightly increases the goal success range on shots
Selfish - More likely to take shots
Himmelswanderer - Gives a raw bonus to successful header attempts.

Other
Trash Talker - Influences foul chances negatively
Leadership - After a completed pass, gives a +1 raw bonus to next dribble roll (normal pass), or shot/pass roll (killer pass)