Here is a learned and informative online article by Andrew Scott on Grant Green’s approach to the blues. The article includes three transcriptions. A key point is that Grant’s improvisatory approach was consistent throughtout his career, and didn’t change during his later “commercial” period. Here is a summary of the article:
My intentions in this article are twofold. First, I provide a musical and style analysis that aids understanding of Green’s improvisations. Second, I use my analysis of the three solos to counter writers Michel Cuscuna and Ben Sidran who assert that Green’s “commercial” output was inferior to his jazz recordings.  My transcription and analysis dispute these aforementioned critics, demonstrating that Green’s improvisatory style remained consistent throughout his career. Lastly, I suggest that rather than his playing, it was Green’s changing aggregations and repertoire that critics found problematic.