Re: What layout/styling technologies have people used?

The big two missing from your list are Quark and InDesign. Quark was the
next big thing just as I was leaving the comp house where I did page
layout with a pica stick and a calculator in 1995. InDesign seemingly took

That's when I became an SGML consultant.

Me too! :)

over the professional/trade/educational publishing world around 2006-2007.

When I was moving from software engineer back to self-employed consultant.

Indesign server is a very popular option for SaaS providers.

BTW – in trade/professional/educational publishing most PDFs are
considered “print ready” and prepared with profiles to go to printers.

Yes, but there's also lots of consumer electronic products that ship with
a CD-ROM containing PDF manuals that no-one's ever going to print (or
read!), so it's hard to say what proportion of PDF files that are produced
are ever printed.  But looking good on screen is as important as looking
good on paper.

Oh yeah… I totally forgot about the drink coasters…