Ambrose begun his career shortly after Holding and Garner had finished.
Anyway the suggestion that West Indies never had four outstanding seamers at once after Roberts' retirement in 1983/84 isn't true at all - Walsh in 1984/85 may not have been the bowler he was to become, but he was still far from a soft option, and the attack of Marshall-Holding-Garner-Walsh that Australian summer destroyed all.
Also, dismiss the notion that Patrick Patterson was in the slightest less impressive in his debut series in 1986 than Lee has been for the last 6 months. In that series he is generally thought to have bowled as quickly as anyone for West Indies in the previous decade, including Croft, including even Holding circa 1976. There were no speedguns so this can't be substantiated, but he certainly hurried-up plenty of excellent players. Graham Gooch, who dealt with the West Indian seamers of the 1980s better than near enough anyone (yes, including Sunil Gavaskar, who played only the occasional good innings against truly excellent bowlers), was said to have been most worried about his safety during Patterson's opening series.
Patterson thereafter was mostly fairly average - but Lee too has been mostly fairly average, in fact quite a bit worse than that, for most of his career. I'll wait a while before deciding who's better out of those two.
A more appropriate date for the finish of the West Indian pace deadliness would be 1986/87. Holding and Garner played sporadically that season, neither with the effect they had had previously, and retired at the end of it, and Ambrose and Walsh did not become the true forces they were eventually known as until 1990, by which time Marshall was about to retire. Winston Benjamin was far from a poor bowler either, and should certainly have played far more than he did. And of course Ian Bishop was magnificent for most of his career, interrupted as it was.