John Travolta, Lenny Kravitz, Billy Ray Cyrus, Jonathan Van Ness, Keke Palmer, Lindsey Vonn, Rick Ross, Salt-N-Pepa, Ice-T, Alex Morgan, Ali Krieger, Ashlyn Harris, Bebe Rexha, Megan Thee Stallion, French Montana, Hailee Steinfeld, P.K. Subban and Victor Cruz are all set to present at the 2019 MTV …