Bill Parcells' coaching tree remains as sturdy as ever.
Coughlin, who served as the Giants' wide receivers coach under Parcells from 1988-90, came in at No. 5.
"Of all the organizational frontmen on this list, Coughlin is the hardest guy to rank," NFL Media analyst Elliot Harrison wrote. "He is one of only two coaches with multiple Super Bowl wins, and keep in mind that he also took the expansive Jacksonville Jaguars to two AFC Championship Games. His is an interesting Hall of Fame case. The only downside for Coughlin is the fact the Giants missed the playoffs in 2009, '10, '12 and '13."
The other Parcells protégés claimed the top two spots.
New Orleans frontman Sean Payton, a former offensive coordinator of the Giants who later worked under Parcells with the Cowboys, was the runner-up to New England's Bill Belichick. The Patriots' distinguished head coach was Parcells' defensive coordinator during the Giants' 1986 and 1990 Super Bowl title runs. Jim and John Harbaugh fell in between at Nos. 3 and 4, respectively.
As far as the NFC East is concerned, Philadelphia's Chip Kelly was the closest to Coughlin at No. 18. Jason Garrett of the Dallas Cowboys was No. 23 while first-year head coach Jay Gruden of the Washington Redskins landed at No. 30.
Here are the top 10 head coaches according to NFL.com's power rankings:
1) Bill Belichick, New England Patriots
2) Sean Payton, New Orleans Saints
3) Jim Harbaugh, San Francisco 49ers
4) John Harbaugh, Baltimore Ravens
5) Tom Coughlin, New York Giants
6) Mike McCarthy, Green Bay Packers
7) Pete Carroll, Seattle Seahawks
8) John Fox, Denver Broncos
9) Mike Tomlin, Pittsburgh Steelers
10) Andy Reid, Kansas City Chiefs