The front of the lats can be hit with both dumbbell and barbbell pullover. But a good pullover machine stimulates the growth even better i think.
There is no front of the lat. There's only 1 "lat", & and its function is to pull the upper arm sown while in front of the body. All the pullover does is eliminate the musclesnin the arms from assisting (aside from slight involvement of the triceps, in which the long head crosses the shoulder joint and attaches at the scapula) and serratus, which pullsntje scapula forward, opposite of the rhomboids, which pull the scapula back.
Pullovers whether machine, db, bb, or straight arm pulldowns with a cable, and pullups/machine pull does with the arms/elbows in front of the body, all target the lats.
Movements like a chinup or pull down with themselves out to the sides target more of the teres muscles of the upper back, & less of the lat.
Rowing movements tend to target move of the rhomboids, with greater arm involvement.