In a large bowl, combine grilled corn, mayonnaise, feta cheese, red onion, cotija cheese, cilantro, lime juice, garlic, chili powder, paprika, salt, and pepper. Mix well and adjust seasoning to taste. Set aside.
Preheat the grill to high heat (450-500°F) and clean the grates thoroughly to prevent sticking.
Season the ribeye steaks generously with salt and pepper on both sides. Let the steaks sit at room temperature for about 20 minutes before grilling for even cooking.
Place the steaks on the hot grill grates over direct heat. Sear for 3-4 minutes with the lid closed. Flip and cook for another 3-4 minutes. Check the internal temperature with a meat thermometer. If needed, move to indirect heat until desired doneness is reached. For steak doneness: 125°F for rare, 135°F for medium-rare, 145°F for medium, 155°F for medium-well, and 160°F for well done.
Let the steaks rest for 5 minutes at room temperature, then cut into bite-sized pieces.
Assemble the rice bowls by dividing rice, steak, street corn salad, and desired toppings among four bowls. Consider adding sliced avocado or jalapeños for an extra kick!
Serve and enjoy immediately!