I have the Dahon Mariner D8. It came with a rack like this one (Dahon Bikes USA - Arclite Aluminum Rack Black (for 20" Wheel)). So it is much smaller than a regular sized rack. I know I can get a bigger rack, but I like the small rack that it came with.

I was wondering what people have used as panniers on a small rack (not a regular full sized rack)

I was thinking something like this Ortlieb downtown (https://www.modernbike.com/product-2126214877). Looks shorter than the regular panniers for ground clearance. But I am not sure about the heel clearance.