I think these charts reflect more on who each bowler was bowling with than anything else. For example, the west indies quicks of the 80s all seem to have even spreads because they were all great and taking similar stacks of wickets. Steyn is similar today bowling with Morkel and Philander.
Then you have Glenn Mcgrath and Warne, one of whom gobbled up all the top order batsmen leaving the other to feast on the middle order. Some of the others listed didn't necessarily have that great support at the other end, so their results are slightly skewed (lillee, Clarke, Larwood, Kapil Dev)