man, those Alphard things are Gopping. colleague of mine has one, its like being in a palatial lounge, leisure and curtains and weird trim nobody asked for. 3L v6 too, so while its got a good burble. If you put your foot down, it just burbles a bit more and uses more fuel. Dont think it goes any faster. Hes had an LPG conversion on his, because its TOO thirsty on petrol.
It is surprising that you dont get many petrol vans in the uk though, i guess they are all just built for the torque, to be full of stuff and not wipe out the fuel economy or power.
You should be ok on mini vans; I cant imagine this is quick, and its the same size as a berlingo, but other than that its a winner:
https://www.autotrader.co.uk/car-details/202107275502274
If youre up at transit/transporter size,i suspect youll have to stick with a diesel.
The newer ones are very petrol like to drive, and if you get a euro VI one, with stop start and adblue and all that rubbish you dont have to feel quite so bad about the soot (though they do need pushing up a motorway once a month to regen the DPFs)?
FWIW, The new Transporter is available as a petrol, but its new new
https://www.parkers.co.uk/vans-pickups/advice/2018/vw-transporter-tsi-turbo-petrol-long-term-test-review/