Deadlifts are good for middle and lower traps but if they are working you upper traps your doing them wrong. Shrugs are about all you can do and traps are like any other muscle, there is no secret exercise for making them bigger.
Upright rows are a medial delt exercise, shoulder pressing involves the traps to a degree as well but I would not recommend either (assuming proper form is used for both) as trapezius exercises. Peace.
all of the above plus powercleans. Ive never met anyone who could clean worth a damn who didnt have huge traps. Make sure you have technique down with these.
Not overhead, power cleans are an olympic lift, where the bar is started on the floor like a deadlift, then explosively lifted up and rested on the shoulders like a front squat. Its a tough movement, takes weeks/months to get down.
