In this context, when I said "left" I meant "anti-capitalist" or at least "doubtful about capitalism". By that definition, Greenwald is nowhere near left as far as I know.
I don't challenge any of your statements about Glenn's excellent work over the years. I followed him since his first month blogging, then at Salon and so on. I think the reason he attracted a lot of left readers like me back in the aughts was because he was willing and able to condemn the injustices of the Bush administration in a way that the mainstream media, and most of the early left blogosphere could or would not. I have, however, become less enthusiastic about much of his work since 2016.