I'm super-new to grasshopper and I can't seem to get a loft going between any of these curves. I've tried modifying the shape and only having two curves. When i bake the curves, the loft works fine.
the loft won't work because all your curves are stuck in their own little list. The Loft component is confronted with a bunch of lists, and it attempts to loft only the curves that share the same list. Since there is only ever one curve per list, nothing happens because you cannot loft a single curve.
Long story short, you need to flatten the list of curves. The easiest way would be to flatten the S input of the Loft component.