A general definition of legumes are plants that form pods that split into attached halves revealing the seeds within the pod. That would apply to peanuts and chickpeas but not apply to coconuts or carob or vanilla beans or coffee beans or the cocoa beans from which chocolate is made. Coffee has other problems like the oils and the caffeine content which can be very inflammatory to the digestive processes contributing to leaky gut and also may irritate the bladder.
Chocolate processed for eating also has caffeine and has to have some kind of sugar as cocoa is very bitter. It is often mixed with high saturated fats or oils, to give it the right texture to make candy. Not all cocoa powders are processed equal- some may give you problems and others not so much. Generally, non-milk chocolate foods may become an occasional treat after you have begun to claim major recovery processes over time. That is why there is a recipe for chocolate cake in our book- that is intended eventually for an occasional treat, not for breakfast every day!
Saturated fats are to be avoided - a previous blog of Ann's reminds us that some people have completely eliminated all MS symptoms simply by avoiding saturated fats. That is how important they are. Sugars are very irritating to the nervous system - For instance, Ann and I suspect that folks with optic neuritis should be very careful with their glucose intake.
Fresh beans and peas are also legumes as is soy in all of its many processed forms, like tofu, soy milk products, tempeh, and soy sauce. As always, it is up to you to experience for yourself how you react to each legume. Some you may tolerate, others may give you immediate symptomatic feedback. Still others may only become a 'trigger 'food- something that gives you a temporary symptom that disappears within hours or a day. Avoid those until your recovery is well under way, and then you can experiment to see if an occasional serving still sets off troubles for you or not.