Starting with WooCommerce 9.6 the Brands are not showing up anymore neither in frontend or backend.
This happens because WooCommerces now includes a native Brands functionality which seems to automatically take over any other implementation (even other Brands plugins).
To fix this problem, please copy this code snippet below into Code Snippets plugin (included in Wraith):
add_action( 'init', function() {
update_option( 'wc_feature_woocommerce_brands_enabled', 'no' );
} );