mulit country magento store setup Robots, sitemaps canonicals and hreflang

1) hreflang does NOT 'avoid' duplicate content issues. Google will typically STILL only choose one version to index. It wont magically index all the variations separately. 

2) You need to make sure all the pages have their own sitemap entry. ie will need five <url> blocks, one for each version of the page. And each of those blocks would then in turn have five <xhtml:link>

3) The 'Performace' report in the console only reports the 'canonical' URL, NOT hte URL shown in search results.

 So even when hreflang is working perfectly, it will report a a UK visitor as having visited the /us/ page, even if they DID see the /uk/ URL in their search result. 

4) Auto redirects can make things MUCH worse. Ie if when Google tries to crawl the UK url, it gets blindly redirected to /us/ (because Googlboe in US!) - then it can't read the /uk/ page. It can't validate that the hreflang is correct, so will almost certainly render hreflang ineffective!

So in short: indexing just /us/ is probably to be expected. hreflang may or may not be working (hard to tell via the console), but likely not if there are auto-redirects.