This doesn't exactly address your request in terms of lowering the calorie count ounce for ounce, but if you're interested in the "a little goes a long way" variety, you could try some of the stronger cheeses like extra sharp cheddar or goat. My go-to is 1/4 cup of crumbled feta for about 80 calories. I find that it gets into just about every bite with the small crumbled bits, with lots of flavor. Rarely is there not a container of crumbled feta in the fridge!
And if you don't mind spending the money, grating from a well-aged wedge of parmesan is heavenly in my opinion.
Anail a’ Ghàidheil, air a’ mhullach
Get to 130s
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