I also generally default red or orange LEDs for power and indication, particularly at 3.3v (for the boards I sell, I finally settled on a consistent LED choice for LED_BUILTIN - red for boards with no reg, orange for 3.3v (both of these have forward voltage around 2v), white for 5v (forward voltage around 3v) - paired with 1k resistors, this keeps the forward voltage well below operating voltage, while still keeping the current no more than a couple of mA at the chip's maximum operating voltage of 5.5v; I considered using green for the 5v ones, or blue - but the white is more distinctive; branding)
I think people often use blue because it looks 'futuristic', and green because they look brightest for a given amount of current, since the eye is most sensitive to green. I hate green and blue power LEDs - i put blobs of black acrylic paint over them. I used to be much worse at sleeping when there was stray light, and had even the dim red and orange power lights blocked out in my bedroom. Which is also my workshop, hence tons of powered devices.
For growing, if you are optimizing for growth efficiency (ie, yield per kWh of electricity) you want the red and blue grow lights. Chlorophyll has two absorption peaks, one around 440nm (royal blue) and one around 660nm (deep red). You know how plants look green? That's because the leaves reflect green light, instead of absorbing and using it. The whiteish grow lights are more aesthetic, which matters if your plants are in the open in your home, as in the indoor/hydroponic grown herbs and veggies that may double as decorative elements - but the plants would be just as happy with just the deep red / royal blue (which would be cheaper to run for given amount of plant growth, since you're not wasting power to produce green light that they can't use).
I'm surprised that chart shows white as a higher forward voltage than blue - maybe that's the difference between the 450-460nm blue (which our eyes are more sensitive to) vs the 440nm royal blue that is used to pump the phosphors? Because like, as we've been over, a white LED is just a royal blue LED with a blob of phosphor on top.