I haven't looked in a while, but Wikipedia has this:
Crusade 1967
The Diary of A Band, Volumes 1 & 2 1968
Bare Wires 1968
Blues from Laurel Canyon 1968
The Laurel Canyon album doesn't have Bluesbreakers in the name.
I might try to listen through those albums again. But not tonight.

Since that time there have been many great blues guitar players; and some people believe Robert Johnson was the best of all time. I have a Johnny Winter album where his playing is so drenched in the blues that (again, at the time) it makes you want to crawl into a hole and get passed-out drunk. It's relentless.
Also ran across a touching tribute to Mayall that Clapton posted. He was effusive in his gratitude for all Mayall taught him about the blues.