John Amos played the adult Kunta Kinte on Roots as well all but which of these TV characters?

This is a bit of a trick question! While John Amos did play Kunta Kinte in the original "Roots" miniseries, he was not in the later sequels or reboots.

LeVar Burton played the adult Kunta Kinte in the 1988 "Roots: The Next Generations" miniseries.

So, the answer to your question is that John Amos did not play Kunta Kinte in any other TV series or miniseries besides the original "Roots."