A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, menu } from '@wordpress/icons';
<Icon icon={menu} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M5 5v1.5h14V5H5zm0 7.8h14v-1.5H5v1.5zM5 19h14v-1.5H5V19z"></path></svg>
menu – WordPress Icon Library