Thanks!
I'll be ordering the LL1Z-6111600-AA, and will post my feedback on them.
Confirmed - pictures posted of folding cargo liner for 2018+ Expedition Standard Length and the LL1Z-6111600-AA part number are matched.
Paperwork that comes with the mat states: 2018+ Expedition
Overall really nice fit and great folding option. Only complaint that the rubber material is a bit too slippery for my taste, but i can load up my kid's muddy mountain bikes inside without fear.
Only other minor inconveniences are:
1. there's a slight peak to the mat when the 3rd row is down, but this is for the bend point of the mat to fold over when the seats move up, and
2. due to the velcro, you won't really use that small cubby space under the folding shelf platform. Place in there items that you really won't use unless of emergency.