Foldable 18.5" Dual Monitor-INVPM509

I really liked this dual 18” InnoView 18.5" Laptop Screen... https://www.amazon.com/dp/B0DGD72DK5?ref=ppx_pop_mob_ap_share

I believe you can get pretty close to this with the Innoview displays - a single cable can drive both displays and they are pretty thin when folded. I've had mixed luck with these providing PD though and you may need a special setup to get 4+ independent external displays off one computer simultaneously, but you probably already do.