Well, it seems there was good reason to attach release candidate status to my previous pair of mirror lists!
Thanks phenixia, that was a very astutely spotted error! Well done!
Thank you very much zerouno for contributing the Italian mirror! Considering there were no Italian mirrors listed, Italian Slackers will be most grateful!
As for ftp.osuosl.org, you are indeed correct that it's the official mirror. However, I spent a fair bit of time investigating this mirror, and through doing so I discovered that the exact location of the Slackware folder is in fact ftp.osuosl.org/.2/slackware/ (to which ftp.osuosl.org/pub/slackware/ links). If you wish to verify that, just try entering it in a web browser.
Btw nickbeee, I'm afraid I haven't amended my list for noting IPv6 mirrors. I think that could become part of my plan (i.e. in a few months) to have a detailed mirrors page for the SlackDocs project. Thanks for the suggestion though!
Now, I found two mistakes of my own, in a manner of speaking, after submitting the release candidate lists to Pat:
1. For two of the Swedish mirrors, they weren't in alphabetical order.
2. I removed lug.mtu.org, as it hasn't been accessible for about a week now, and I used a rule that, if a mirror isn't ready for the release of Slackware 14.0, it won't be included. Incidentally, I was consistently disappointed that mirror.corbina.net/pub/Linux/slackware/ hasn't been updated since mid-July. Anyway, I broke my rule for lug.mtu.org and held out hope, as it seemed to be working a couple of days before I issued the release candidate lists, but now that it's over a week I have to let it go, as far as I'm concerned. At least it's a US mirror - there's certainly no shortage of them!
Also, after seeing zerouno make use of the host command (which I hadn't encountered before... yes, I'm quite a n00b), I decided to go through my lists again, using the host command to find and eliminate duplicate mirrors, and to replace alias mirrors with their actual mirrors.
Anyway, I've attached the final mirror lists to this post for everyone's perusal. If anyone finds and reports any more errors I'll be grateful, but I don't expect any changes to be included for the release of Slackware 14.0 - indeed, I submitted the lists to Pat last night to maximise the probability of their inclusion for Slackware 14.0. Don't let that detail hold you back from checking them though!
Thanks again to everyone that contributed to making the mirror lists as excellent as they are!
Cheers, and Happy Slacking!
PS. There's an Easter Egg I somewhat inadvertently put in the list of each architecture, which I told Pat about when I emailed the lists to him last night. Anyone that spots it can consider themselves truly 1337 (even if they're running Slackware-current instead of 13.37). Just some extra incentive for fellow Slackers to check my lists!