 optional, default=true) Create a native descriptor wallet. The wallet will use descriptors internally to handle address creation. Setting to "false" will create a legacy wallet; however, the legacy wallet type is being deprecated and support for creating and opening legacy wallets will be removed in the future.
7. load_on_startup         (boolean, optional) Save wallet name to persistent settings and load on startup. True to add wallet to startup list, false to remove, null to leave unchanged.
8. external_