Babolat has several ATP pros with racquet, shoes and apparel.Which companies are completely integrated: Racquet, Apparel, Shoes.
Off the top of my head.
Head, Wilson, and Prince.
Babolat has racquets and shoes but not an apparel player.
Adidas has shoes and apparel but not a racquet player.
Lacoste and Nike have apparel and shoes but not a racquet player.