Nice guy. I talked to him occasionally at Ronnie's. They used to nickname him "The Human Guitarist". He was great live.
I haven't read the whole thread yet, and I don't know if one of the giants of the jazz guitar has been mentioned yet. No, he's not an American, he's a Canadian. Ed Bickert. I do love Grant Green, in good part because of his recordings with Larry Young and Elvin Jones. But as a guitarist my vote goes to Ed Bickert and his Telecaster.
Where to find him? He's on 2 albums with Paul Desmond for starters. I like him with his Canadian band, with the hugely talented Don Thompson on Bass. Check him out - he has a unique chordal language and is a true original. I just love his playing.