Add the water to the Instant Pot Multicooker, press Steam, and adjust the timer to 30 minutes.
Once the water is boiling, stir in the salt, followed by the oats.
Cover with the lid and cook (the oatmeal should be simmering), stirring occasionally, for 15 minutes. Uncover and continue cooking until the oatmeal is tender and thickened, about 5 minutes more. Press Cancel.
Sprinkle the cheese over the oats and stir to combine.
Spoon the oatmeal into bowls and top with the eggs, salsa, and cilantro, if using.