You want a trifold. Gotta be a Brompnot trifold. Okay.
Dahon K3+ (the little folder on the right)
Bifold. So you don't want it. Cool. That's fine. But maybe it would work for someone else reading this thread.
The weight of a Brompton P Urban with its titanium bits. Around 1/3rd of the cost.
Less expensive than the Aceofix, Mint Bob, and some of those other bikes you are considering. Sold by a US retailer with a US warranty.
External gears. Suitable gear range. Finer gear steps.
Discs brakes.
Yeah, yeah, it* does multimodal transit.
But, and it's a big but - not a Brompnot trifold.
*K3 in this image is not the + model