Hold on, I think we need to clarify a point. It's not as simple as crank drive motors being better for hills. There are several factors you need to consider, which are more fundamental.
You can divide all electric bikes into two categories. There are those that give the amount of power you select from a control panel, which is constant, regardless of how hard you pedal; and there are those that use power multiplication, which give power in proportion to how hard you pedal. It's very important that you understand that difference.
You say that you have health problems. If that means that you can't pedal very hard or your legs get tired so that you can't pedal at all, you could end up stranded if you have the second category.
You can get both types of drive (crank and hub) in each category, though there are more hub motors in category 1 and more crank motors in category 2. The Bosch motors are in category 2, Juicy can be either, depending on which model, but probably category 1, and the Pendelton is in category 1. I'm not sure about the Raleigh. You'll have to ask if you think it's important for you.
If you would tell us your weight and details of your impairment, we could make a better judgement about suitability of different bikes.
