So your mix has kind of stalled out. My hard drive crashed a while back, so I only have access to my physical CDs, but a lot of the big hitters are only on my computer. So I'm piecing something together, but it's taking a bit more focus than was initially required.
Check out Big Mama Thornton and the Muddy Waters Blues Band - 1966. James Cotton on harp, Otis Spann on keys, and Waters himself even graces us with his six string. And Thornton, of course, kills. It's definitely worth investigating.
Gribbz, I haven't forgotten about the Chicago blues list. It's been 90% completed for the last 6 weeks, I just haven't overcome the laziness. I'll have it out today.