Sunlight as you have found AA is for alcoholism and not for clinical depression, but a huge percentage of AA alcoholics have found tremendous help with thier depression by stopping drinking long enough and working the steps.
That is not to say that all depression dissappears because of the AA program, it doesn't, but doctors can deal with clinical depression through meds and therapy a lot easier with some one who does not drink any more and has worked out a lot of their issues through working the steps in AA.
Sunlight I am happy joyous and free thans to AA, I was a depressed emotional wreck before that. The difference is I am not clinically depressed. A lot of the folks I know in the rooms are either in therapy, on meds, or both. Like you they found sobriety in AA and the steps, and help with thier depression through therapy and meds.