Personally, as a weightlifter with protein goals I find it easier and more practical to look at a diaas chart, than to research the amino acid profile of grains or legumes to see if the combination yields a higher bioavailability. For me it ends up as: if I'm eating lentils I'll eat a bit more taking into account not all the aminos are there

Not all protein sources are equal. In order for a protein to be fully utilized its amino acid composition must contain a certain amount of each essential amino acid. 1 gram of pea protein yields about 70% as much of 1 gram of animal protein. I'd recommend looking up DIAAS.

Would be interesting to have a protein-quality column, given that only a percent of plant-based proteins are absorbed compared to protein from animals.