How to create a word press user with hashedpassword

You would have to update the password column in the database (see below). But this alone won’t work. Password hashes are salted using the SALT keys in your wp-config.php (this must be kept secret). Your new site would need to have identical keys for the password verification to work.

The following function updates a given user’s password field (in the database) with the provided (hashed) password:

/**
 * @param int $user_id The user ID
 * @param string $hashed_password The hashed password
 * @return int The number of rows updated (should be 1 or 0 ).
*/
function wpse_update_password_field( $user_id, $hashed_password ){
   global $wpdb;

   return $wpdb->update( 
        $wpdb->users,
        array( 'user_pass' => $hashed_password ),
        array( 'ID' => $user_id )
   );
}