Poke a few holes in the sweet potatoes with a fork and place them on a microwave safe plate. Cover with a damp paper towel and microwave for 5-8 minutes, until tender throughout. Let cool for a few minutes.
While sweet potatoes are cooking, prepare the aquafaba aioli. Place the liquid from the canned chickpeas, mustard, vinegar, garlic, and salt in a large cup that will fit the stick of an immersion blender. Use the immersion blender to blend, then add the oil at a trickling pace while continuing to blend. When done, it should form a creamy dressing-like consistency (but thinner than mayo). Stir in cilantro and set aside in the fridge for now.
Place the flesh of the sweet potatoes in a large mixing bowl, and mash well (discard the skins). Add the corn, green onions, cilantro, cornmeal, almond milk, cumin, salt, and cayenne. Stir until well combined.
Form eight fritter patties; each should be about 3 inches wide. If the mixture seems too dry or crumbly, add another tablespoon of almond milk, stir again, and then form patties.
Heat half of the vegetable oil in a skillet over medium heat. Add four fritter patties to the pan. Cook for about 2-3 minutes per side, until golden brown on each side. Remove and set aside on a paper-towel lined plate (to absorb excess oil). Place remaining oil in the pan and cook the remaining fritters.
Top the fritters with the aquafaba aioli right before eating. Enjoy!