kubectl config provides no subcommand to list user records or batch delete context / cluster records.
kubecli config provides subcommands to batch delete and list user / context / cluster records.
kubecli config current-context # Display the current-context
kubecli config use-context NAME # Set current context to NAME
kubecli config namespace NAME # Set namespace for current context to NAME
kubecli config delete-cluster NAME # Delete the specified cluster NAME from the kubeconfig
kubecli config delete-context NAME # Delete the specified context NAME from the kubeconfig
kubecli config delete-user NAME # Delete the specified user NAME from the kubeconfig
kubecli config get-clusters # Display clusters defined in the kubeconfig
kubecli config get-contexts # Display contexts defined in the kubeconfig
kubecli config get-users # Display users defined in the kubeconfig