public static Node findParentWithTemplateCategory(Node pageNode, String templateCategory) throws RepositoryException {
        ...
            if (TemplateCategoryUtil.hasTemplateOfCategory(current, templateCategory)) {
                return current; //returns variant which hasn't child pages to add to navigation if it's home page
            }
            ...
            current = current.getParent(); //but if it's not home then the parent of real node (not variant) is returned, so it works for other then home pages, but that's only luckily consequence
        }
        return null;
    }