Sorry, I meant to change only the headings you didn’t want (but that won’t work for text that’s already paragraph-style, so I suppose that wouldn’t fix the bold issue in any case; I apologize for mixing things up!).
Testing it out in a draft, it seems like having paragraph breaks before and after a single line of bold text might be what triggers index inclusion? In which case you can likely remove the offending entries by replacing the preceding or subsequent paragraph break with a shift-enter (still hacky, but at least addressing the right problem this time XD).
Sorry, I meant to change only the headings you didn’t want (but that won’t work for text that’s already paragraph-style, so I suppose that wouldn’t fix the bold issue in any case; I apologize for mixing things up!).
Testing it out in a draft, it seems like having paragraph breaks before and after a single line of bold text might be what triggers index inclusion? In which case you can likely remove the offending entries by replacing the preceding or subsequent paragraph break with a shift-enter (still hacky, but at least addressing the right problem this time XD).