Yep seems they mostly use blue lasers and a phosphor wheel to make green light. Green light must be the main reason for useing lasers. Some have red and blue LED's and only green is made from the blue lasers. Some use just a red LED and let the laser make blue and green light, some are laser only to make blue, red and green light but none I have seen use a green LED and lasers to make the other colors.You know most use 1 big red LED and a bank of the blues that shine through a spinning phosphor wheel with one clear gap for blue to go through.
Here is a new 5000 lumen projector I did a teardown over the weekend that uses four NUBM05 arrays to make all the light.