This is difficult to quantify. This might fit with Sudoku History also.
Maybe could call it Sudoku experts, Sudoku pioneers. However,
want to do it, it would be neat to see the "people" aspect of
Sudoku. Who are the pioneers. Who are acknowledged as having
the most expertise in Sudoku from various view points. Anyway it
would be great to have a list, with short Bio of Sudoku people of note.
However, you would define that!