This will be mostly possible in the upcoming Bitcoin Core 0.18 release.
First you need to understand that the sequence of such paired multisig addresses (with public keys generated from 2 xpubs in lockstep) can be described in the new descriptor language.
The syntax is sh(multi(2,XPUB/*,XPUB/*)). The sh indicates P2SH embedding, multi refers to multisig, ...
You can’t. Bitcoin does not work by names, emails, or material things of that nature. Bitcoin works in an anonymous way where public keys are the names and private keys the persons. There is no way to figure out what you are asking, At all.