A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, grid } from '@wordpress/icons';
<Icon icon={grid} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="m3 5c0-1.10457.89543-2 2-2h13.5c1.1046 0 2 .89543 2 2v13.5c0 1.1046-.8954 2-2 2h-13.5c-1.10457 0-2-.8954-2-2zm2-.5h6v6.5h-6.5v-6c0-.27614.22386-.5.5-.5zm-.5 8v6c0 .2761.22386.5.5.5h6v-6.5zm8 0v6.5h6c.2761 0 .5-.2239.5-.5v-6zm0-8v6.5h6.5v-6c0-.27614-.2239-.5-.5-.5z" fill-rule="evenodd" clip-rule="evenodd"></path></svg>
grid – WordPress Icon Library