For me well read really means nothing, most of the folks who talk about it are ego stroking. At least some of the ones you list off I can respect.
All this and no Jack Vance?
... Perhaps there is a difference between being well read and reading well.
If the crap they made me read in High School was any example (”The Dollmaker”, “Siddhartha”...) They can keep it.
Now a little James Schmitz, or Heinlein, I can do with some of that.
:)