Should this concern me?

It's likely nothing, but should I be concerned if under "Get Info" > "Sharing & Permissions" beside myself, the Admin and only user with the exception of "Guest", there are also permissions available for "Staff" and "Everyone" (picture attached below). I don't share my files or use AirDrop, and I own the computer. Also on certain files I was blocked from changing the settings on Staff and Everyone to No Access, a message popped up saying I didn't have that permission/access.