1. Breadcrumbs shown below title. Hovering over a crumb displays a clickable button style behind it.
2. Clicking the disclosure icon next to a crumb expands a multi-column list of what should be siblings to the current node or leaf. I think this one shows children though.
3. Children of Cables. When navigating down this deeply, the options are very helpful.
4. Siblings of "Products" seem miscellaneous.