As there is no active admin or bureaucrat on this wiki to whom I could address this matter, I have elected to create a blog post in the hopes that future admins/bureaucrats may someday read this.
Due to the prevailing lack of infoboxes on this wiki, mobile-friendly or otherwise, I have created an example infobox package here on the Portability Hub. It contains an example infobox and a pair of matched stylesheets that complement the color scheme of the Rush wiki.
In the event that anyone decides to implement this, I am available for questions. As always, feel free to use this code as desired.