Well, first of all, the "T7" isn't a Transporter anymore, but in fact the new Sharan.
The Buzz is a test case for an electric van.
And last, the Transit isn't a VW.
So the only van from VW nowadays is the Buzz.
VW didn't learn about the first and second generation of the Sharan? Where it was a decent success, it just wasn't (certainly the first generation) a VW. The only thing from VW in the Sharan were the engines.