Given the nature of there being so many variables (distros, dependencies, packaging, etc.) I think for the time being it all comes down to support and being able to update documentation rapidly (that’s why I suggested a wiki). Anyway, most of everything worked just going right off the Ubuntu example installation from the installation guide.
Here’s an idea. You could focus Nextcloud installation support to certain options for home use and less than 10 employees only or something like that. To qualify for the free home / micro business installation support the user would have to have a distro that you have a volunteer for i.e. MrLinuxMintX.Y and MsFedoraX.Y. User must affirm that he or she will hold Nextcloud and the support volunteer harmless and be willing to follow the advice of the support volunteer (which would be directing the user through a limited number of configuration options). The max amount of free support given would be something like twice the time it would take a volunteer to install Nextcloud on his own machine. Just food for thought. No response needed.
Alternatively, if you could just find a way to track requests for help that are not responded to within 48 hours, that would probably have prevented my issues from falling though the cracks. Again, thanks to everyone at NC and the community for the hard work.