Chayote fruit and squash fruit used as vegies are good, but chayote greens, just like squash greens(used on gumbo, stews, or broths) are much better-tasting! One instance(to me, at least) when the leaves are better tasting than the fruit.
moringa is another leafy vegie which tastes pretty good, and rapid producer of nutritious greens and pods.
as for jute mallow, are you pertaining to egyptian spinach/ jew's mallow?
i love those too, despite the slime. One of the sweetest leafy greens have tasted.
winged beans are 'head-to-toe' edibles, as the greens, flowers, pods, beans, and roots are all edible, and are richer in protein than most other vegies
will be posting pics of our winged beans, chayote, jew's mallow, and moringa we recently grown from seed.