Cut the kernels off the corn cobs. Grill the kernels on a lightly oiled griddle over medium-high heat until they are charred, about 10–12 minutes. If using canned or frozen corn, sauté until lightly browned.
Transfer the charred corn to a large mixing bowl.
Add the grape tomatoes and the white parts of the chopped green onions to the bowl.
Add the garlic, basil, apple cider vinegar, 1 tablespoon avocado oil, and Citrus Mojo seasoning. Stir well to combine.
Mix in the feta cheese.
Garnish the salad with the remaining green onion greens and extra feta if desired.