I set this air layer in early August so after about 7 weeks it is time to separate it. One question I have is about the solid green branch. When I got this cutting it was long and I was able to get 3 individual plants from it. Two are variegated and one is this solid green. Will it ever revert back or set a variegated branch of it's own? If it will always be green it's on the chopping block.

highly unlikely you will see variegation again on the solid green reversion. I try to cut those off when I see them

Hi Adelmanto,
The choice is yours. But I for sure would let it grow until end of next year with more fertilizer and a bit more sun.
Sometimes lacking sun and fertilizer will make them look like they reverted.