It's much more complicated than just "blurples are bad". My opinion on them is that they have their uses but I wouldn't use them as my main source of light. The first thing to consider is the effect of the spectrum itself. Blue and red light are the most photosynthetically active spectrums of light meaning they produce the most growth per umol. Red is a bit better but causes elongated internodes. The added blue can counter the red and cause optimal internodes. The added green in full spectrum lights has a much smaller effect on growth as compared to red and blue. It does significantly help the grower identify discoloration on plants which in my opinion isn't too important because you can just use a flashlight or the flash on your phone once a day instead.
Apart from spectrum, there is also efficiency. Since humans prefer full spectrum light, it is the most studied and manufactured spectrum of diode. This means that a lot more research goes into creating the best diode for humans than the best diode for plants. This research has resulted in incredible advancements in white diodes making them extremely efficient. Blue and purple diodes on the other hand don't get a nearly as much research done into them resulting in a lack of quality/efficiency. Having an efficient LED is important because it helps the grower maintain lower temperatures, produces more light and lasts longer.
To answer your question about different types of LEDs, I'm not sure what you mean but I'll answer that to my best ability.
LED fixtrues are made up of tens, hundreds or thousands of individual diodes. The three main configurations of the LEDs at the moment are QBs (quantum boards), COBs and strips. A simplification of the benefits and weaknesses of each is that the closer together the diodes are, the cheaper they are to buy, but the more heat they share making them run less efficiently which causes more heat and less light. This heat can be combatted by using bigger/better heat sinks and/or fans.
A while ago, I had the same questions as you so I made a thread about it and I think you will find the answers to every light question you can think of there.
I've sort of already talked about this already but I never asked anybody for their opinion on it. So I have a tolys 600w LED from amazon (you can look it up if you want, it doesn't really make a difference). I haven't checked the actual wattage but a review on their 1000w model said it ran at...
www.thcfarmer.com