Hi I got locked out of my other email,Been having issues with play store and Google. really sorry for the late reply. I had to get the app couldn't upload on my device. Will try now,It could be just anonymous files/Miscellaneous ones just labelled like that.
Oh, I see what you're referring to now. Keep in mind that "Detail Memory" is referring to RAM, not your internal storage or SD card. That's pretty technical information, and not anything the average user would need to worry about.