The paper "Some analyses of Erdős collaboration graph" by
Vladimir Batagelj and Andrej Mrvar
(Social Networks
Volume 22, Issue 2, May 2000, Pages 173-186)
is filled with fascinating data and analysis as of 2000.
(Because this is [now more than] a decade old, it does not answer your question.)
Here is their figure of "cliques of the main core," with many recognizable names
(if you can read them at this resolution!).
I see many (63) later papers that cite this one, but none that directly update it for this
specific Erdös graph.