A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, alignCenter } from '@wordpress/icons';
<Icon icon={alignCenter} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M7.5 5.5h9V4h-9v1.5Zm-3.5 7h16V11H4v1.5Zm3.5 7h9V18h-9v1.5Z"></path></svg>
alignCenter – WordPress Icon Library