Science/scientifically explained: Hemp protein (also full hemp) is the easiest for digestion for human body compared to others. It is not only the speed of digestion as Whey is on the scale of speed higher, but hemp protein has more complete spectral for human body and best balance.
Opposite to Soy protein from Soy plant which naturally absorb from ground and produces very toxic substances to not list them here - in lab are shown.
Pea protein is good, but to not offend anyone, is good and recommended for A rh- (or A rh+), and it does not have the full balance and that's why A blood groups make choice for it.
Wheat protein isolate has very slow digestion circle, and is highest on the percent's for protein content, but also strongest - with it you are maybe able to build ant's strength..
I do not suggest that you should mix more types, but also I do not say opposite, it is ... your choice.