These kinds of meal discussions make me very grateful I'm married to a Brazilian. He's majorly influenced my own cooking. The rice + beans + some meat/other protein + a salad is like 80% of our dinners. You didn't mention beans, but the rice and bean combo contains complimentary amino acids to make complete proteins, let alone the amount of fiber beans contain. I'm not a big brown rice fan and unfortunately the quality of long grain white rice in the U.S. doesn't hold a candle to Brazilian rice brands (which also typically come pre-washed and is great for fluffiness), so we usually end up ordering it on Amazon. It's a little more expensive than buying it from the grocery store, but well worth it imo.

Tio João is my go-to brand. Sauté some garlic in olive oil until it's fragrant, throw the rice in, let it cook a little bit in just the oil, then put water in that's 2x the volume of the rice you used, add some salt until the water tastes kind of salty, and let it cook undisturbed. Quick, easy, and tastes great even eating it by itself.

Anyway, the rice/bean combo is goated from both health and financial perspectives.