What to check for a refurbished or used camera?

I finally upgrade my D3300 with a refurbished Z50ii from the Nikon USA store. I'm excited that my camera is arriving today but since I have never purchased any refurbished item or anything from the Nikon USA store, I wonder what should I check, any thoughts?

My list is:

• Camera and lens (16-50) appearance: screen, EVF, lens glass, tripod thread
• Battery: if it charges, battery health (not sure if it has an indicator)
• Sensor: physical look, then check with a photo with small apertures (like f16 or f22)
• Mechanical shutter: function, shutter count with a photo
• Flash: function
• Buttons: function and feeling
• Focus: speed and accuracy for auto focus, focus ring for manual focus

Do I miss anything? Thanks!