I believe “content notes” follow the same rules as citations; they should be superscript numbered and formatted the same way. See this article If you have a copy of or access to the Chicago manual check out what they say about “content notes,” which, I think, is the technical term for footnoted or end-noted “random thoughts” in academic papers. :-)

@lillycoyote Content notes! Perfect! Yes, because I was confused as to what to even search for, so awesome!