Paul Morphy, Bobby Fischer and Garry Kasparov.
Magnus Carlsen is just starting out, he hasn't done near enough to be considered in the "greatest of all time" league yet. Ten years from now, if he's still on top, then by all means give him consideration.
.. won maybe six-seven international tournaments in his career...
Ten, including one =1st but not including the Sousse Interzonal where he withdrew while leading.