As far as the Sprinter triplets, now twins, they're all identical short of the grille.
Dodge Sprinter is dead, replaced with the RAM ProMaster which is the Fiat Ducato. The Fiat Duplo is the new Ram ProMaster City, which takes on Ford's Transit Connect, not to be confused with the new Ford Transit full size van that the rest of the world has had for an eternity.
ProMaster
ProMaster City