Vettori managed that, probably would've been even better if he didn't have the back and hip problems plaguing him.If you offered me a spinner that could average 35 while playing most of his games in NZ I would bite your arm off. Yes it is a long way away from here.
It probably is most likely to be a finger spinner, imo in particular a finger spinner that focuses more on overspin and drift like Vettori rather than sidespin and turn for which you don't get much assistance in NZ. Though Sodhi already bowls with a fair amount of overspin and doesn't turn it big so there's some similarities - if (big if) at some point he can land it accurately and consistently then he could indeed perform a similar role to Vettori imo, as unlikely as that may sound for a legspinner.Vettori managed that, probably would've been even better if he didn't have the back and hip problems plaguing him.
I think due to the nature of our wickets and the type of bowling that is most effective here, it's more likely going to be a finger spinner. Our three best spinners domestically over the last twenty years were all left arm orthodox in my view, Priest, Bucko Martin and Vettori. Some might put Jeets or Wiseman up there too, again, finger spinners.