A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, textVertical } from '@wordpress/icons';
<Icon icon={textVertical} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M7 5.6v1.7l2.6.9v3.9L7 13v1.7L17.5 11V9.3L7 5.6zm4.2 6V8.8l4 1.4-4 1.4zm-5.7 5.6V5.5H4v14.3l3.6-2.2-.8-1.3-1.3.9z"></path></svg>
textVertical – WordPress Icon Library