Pegassi
The Toros is a Pegassi SUV returning from earlier GTA games. Rockstar first showed it in an official screenshot (Vice City 08).
Aleutian
First shown: Trailer 2
Astron
First shown: Trailer 2
Baller (second generation)
The Baller (second generation) is a Gallivanter SUV returning from earlier GTA games.
Contender
First shown: Official Screenshot: Ambrosia Postcard