Hey @Tojaris ~ Welcome to the Community! 
You can see what the parent item of a subitem based on what item is directly above it:
Otherwise, is there a specific spot in the platform that you’re looking to be able to see this information but can’t? If possible, please send a screenshot of what you’re looking at in monday so I can take a closer look – https://www.take-a-screenshot.org/
I want to make sure I am understanding exactly where you are in the platform when you can’t tell what the subitem’s parent item is so I can make sure there isn’t a work around or feature that we’re missing here 
Cheers,
Jenna