Declasse
The Burrito is a Declasse van returning from earlier GTA games. Rockstar first showed it in Trailer 1 (1:03).
Bison
The Bison is a Bravado van returning from earlier GTA games.
Bobcat XL
The Bobcat XL is a Vapid van returning from earlier GTA games.
Boxville
First shown: Official Screenshot: Ambrosia 02
Journey II
First shown: Official Screenshot: Grassrivers 02