https://chainquery.com/rpc/importmulti
importmulti, Bitcoin Core RPC, ChainQuery.com
imports addresses or scripts (with private keys, public keys, or P2SH redeem scripts) and optionally performs the minimum necessary rescan for all imports.
bitcoin coreimportmultirpc
https://developer.bitcoin.org/reference/rpc/importmulti.html
importmulti — Bitcoin
This site aims to provide the docs you need to understand Bitcoin and start building Bitcoin-based applications.
importmultibitcoin