By graveyard shift, I mean syndicated game shows that had its first-run episodes broadcast in-between 12 a.m.-6:00 a.m. Here are some examples that I found (http://www.gameshowforum.org/index.php/topic,26486.0.html) pertaining to the New York area:

WCBS: Match Game '98, Sex Wars, Win Lose or Draw (last season), Weakest Link (second season)
WNBC: Matchmaker, Joker 90, TTD 90, Liars Club from the 80s, Kennedy TPIR, Jeopardy (first few months), Davidson Pyramid
WABC: Name That Tune, Headline Chasers, Card Sharks
WWOR: Feud during at least one of Combs' last two years
WPIX: Street Smarts

Superstation WGN before it became WGN America aired the 1998 version of Match Game at 4:30 AM.

WREG (CBS, Memphis, TN): - Hollywood Squares (last two Bergeron years in 2002-04) at 1:35 AM

WMC-TV 5 (NBC affiliate in Memphis, TN) had the following in late-night: Street Smarts, Family Feud (2005-06 season), Who Wants to Be a Millionaire? (2005-07 and 2008-09 seasons), Deal or No Deal (2009-10 season), and Don't Forget the Lyrics! (2010-11 syndicated version).

WATN (ABC, Memphis, TN): Funny You Should Ask (2017 version)

WISH-TV 8 (then CBS/now CW, Indianapolis, IN): Match Game 98 at 2:05 AM

WFTV (ABC, Orlando, FL): To Tell the Truth (2000-02 version) at 12:35 AM

WPXI NBC 11 Pittsburgh-Break The Bank 1985-86 overnights-forget time slot though.