Surely, your updating the Wiki will be very much appreciated by everyone - thanks in advance.
Fabrik is an entirely free package, kept up to date in timely fashion, voluntarily supported within limits but, like every other extension I can think of, custom coding not included free of charge. Yet, it's a powerful tool for data collection, and management, from simple to ultra-complex, extremely versatile and with so many plugins available that I cannot imagine a situation where all of them could be needed. All of which can be configured within wide ranges or, if need be, even further customized.
Considering this, I think the Wiki already covers a whole lot, and we can be forgiving if there're gaps here or there. It can hardly, and sure never will, be able to cover all use cases or code examples, or be a complete handbook for devs or designers.
Out of the box, data display gives you generic table and div options, based on Joomla's on-board Bootstrap 2. Beyond that... yes, just like in every other even only remotely similar case, it takes time, learning and digging into the structure and, as stated, depending on your project and desired outcome, existing coding knowledge. Or more time and learning. Or the will and ability to hire someone else dealing with this.
<rant>
I don't mean you (hey, I don't even know you!), but since a while there's an ever-growing number of people out there calling themselves "(web) designers", clearly and solely based on the fact that they are able to replace copy and images in a template and, eventually, to do some drag & drop - if fool-proof enough. Worse, they expect the tools for this to be free or at least dirt-cheap. Worst, same is true for anything beyond that, such as customization, added functionality, and support of these extras. Again, it's not about you, but some other forum posts here and elsewhere speak for themselves. Nope, that's not the way it works or can work.
So, let's please not argue what a "designer" is or should be... but perhaps my bla-bla before this rant makes some sense...
</rant>
Cheers!