Confused by "Other" category in my data usage

I've been getting super close to my data cap the last few months, and I've noticed that a category simply labeled "Other" is accounting for almost half of my total  data usage. This month it's currently at 44% of my usage, and we only have two days left in the cycle with 1127gb used. When I read the description for this category it says "Activites that makde up a relatively small proportion of your overall usage. This also includes unrecognized traffic or activity that could not be categorized." If my math isn't wrong, that's 495.8gb of data in a category that I can't keep account of, so I don't really know what to do. I read that VPS can mess with data tracking, but my family doesn't use any. Can someone please help me understand?