Wow, I forgot people cared about this stuff anymore. Certainly not those pamphlets they call newspapers and magazines these days.
Colophon, to demonstrate typesetting styles in resizeable displays, you should insert hard line breaks, or at least not use repeating patterns. Your ranging right example came up on my browser page with all but the first and last lines perfectly aligned on the right hand side.
I’ve heard widows and orpans used synonomously for not only words, but a single paragraph left on a page. I don’t remember all the jargon used to describe the various related issues, but they included preferences for starting chapters on the left or right hand pages, breaking paragraphs or lines across pages, hyphenation, and so many more.
My specialty was kerning, undercutting, and proportional spacing. Limitations in spacing could lead to rivers. Having just two space sizes available would make the problem worse when they were used for distributed spacing. I was working with rather primitive computers back then, and we only employed the simplest techniques to eliminate verticalish rivers. I imagine now analysis of whole pages of formatted text eliminate pattern artifacts in spacing and physical word length.