To that list, add Centurion Elite GT and Lotus Eclaire. There are plenty more.

Touring bikes tend to sell at a premium, 75% more than an equivalently equipped road bike. On a budget and a short tour, nothing wrong with a rigid frame mtb. And FWIW, friends of mine rode coast to coast on a pair of Cannondale hybrids (they also rode all over the Canadian Rockies).

Someone earlier posted a video off you tube, of a group of college student touring across the USA on JC Penney 10 speeds. They were either rebranded Huffys, with the god awful rear disc brakes. Anyway, despite riding really crappy bikes, they all made it. I am reading a book about two high school kids that toured from CA to WA on two very basic bikes. And that was when there were many spots without roads, proving you can tour with anything (but be a lot more comfortable with something efficient!) I met a guy this summer, touring coast to coast on his Surly LHT. Fully loaded, it weighed in at 95 pounds! He was making it just fine, at about 60 years young.