The Times-Picayune has a nice write-up on the history of their staff editorial cartoonists since 1896. They’ve also posted a slideshow featuring the cartoonists and some of their cartoons. Luckovich’s early stuff looks a lot like Dick Lochers. Well worth a few minutes of your time.
In chronological order: Louis A. Winterhalder, W.K. Patrick, John Churchill Chase, Keith Temple, Eldon Pletcher, Byron Humphrey, Mike Luckovich, Walt Handelsman, and current cartoonist Steve Kelley.
John Churchill Chase
Even Mike Luckovich’s signature looks like Dick Locher’s …
http://photos.nola.com/tpphotos/2011/10/editorial_cartoons_5.html