Contact buckets
Each contact keeps their own objects, found by searching their name.
Every contact has their own bucket, opened from their card. Filing something to a contact puts it there. It is not shown in your list of buckets.
A contact bucket holds their confirmed objects: photos and videos you confirmed or added, exact printed-name matches, and documents you linked. Suggestions stay out until you answer them.
Search the contact’s name to find everything in it, including objects you filed to them by hand.