First: Great info! Thanks for reminding me of some features of PIs that I forgot about.
Second: As a bcrat of a D&D wiki, I have to point out that we cannot copy most stats from the sourcebooks for fear of copyright violation, but I like your examples :)
Third: We have some data-heavy infoboxes and we use helper templates to format the data and keep it neat. Some examples are this location, this creature (note that the tabbers in the body of the infobox are currently not supported for mobile and render vertically stacked), and this template.