If you are layouting professionally, don‘t waste your time. As much as I hate Adobe, InDesign is the software I hate the least. Although I did enjoy CS4 more than CCwhatever-incremental-update-we-put-in-a-year.
Quark may be #2, but it is the #2 of 2, barely visible on the horizon, maybe it‘s just a dust spot. I say that as a Quark user back in the day, before InDesign destroyed it (and rightfully so). Quark is playing catch-up and is bad at it. Besides, if you‘ve only used InDesign before, expect a learning curve, intuitive is not a word associated with Q.
Affinity makes toy software which they market as pro apps. I wanted to like them, but I constantly hit a barrier with most basic things.
Scribus, if you want to yell at your computer, that‘s what I‘d recommend. Seriously stay away from it.
The rest is not worth mentioning. It makes me sad, but there is no alternative to InDesign. Besides, working with others, they expect InDesign files of course.
That said, if you’re doing it semi-pro, not really complex stuff, Affinity Publisher might be a better choice than Quark, it’s cheaper (free at the moment).