Sitebulb charges 149 dollars a month to visualize your redirect + canonical graph. This does it in the browser - crawls your sitemap, follows each URL through redirects, reads each canonical, and renders the full graph as an interactive SVG. Flags loops, multi-hops, and mismatches.
Read the story behind this tool: Why I built this - the site architecture nobody draws.
Related: Internal Link Equity Flow / Canonical Cluster Conflict