Jerome "Jeff Smith" Jefferds (April 23, 1891 – February 3, 1962) was an American professional boxer who held the Australian version of the World Middleweight Title during his career.
 Despite his relative anonymity, Smith faced off against some the best fighters of his era, including Harry Greb, Gene Tunney, Mike Gibbons, Georges Carpentier, Les Darcy and Tommy Loughran.
 Statistical boxing website BoxRec lists Smith as the 17th greatest middleweight ever, while Ring Magazine founder Nat Fleischer ranked Smith as the #10 Middleweight of all-time.
 He was inducted into the Ring Magazine Hall of Fame in 1969 and the International Boxing Hall of Fame in 2013.
Mike Gibbons (born April 9, 1955) is an American ice hockey coach.
 Since 2007, Gibbons has been an assistant coach with the St. Cloud State Huskies men's ice hockey team.
Leo Florian Hauck (November 4, 1888 – January 21, 1950) was an American boxer.
 During his career he was able to achieve victories over many Hall of Famers including Jack Britton, Jack Dillon, Battling Levinsky, Frank Klaus, Billy Papke, Jeff Smith and Harry Lewis.
 He also faced the likes of Harry Greb, Gene Tunney and Mike Gibbons.
 He was inducted into the Ring Magazine hall of fame in 1969, the Pennsylvania Sports Hall of Fame in 1972, and enshrined within the International Boxing Hall of Fame as a part of the 2012 class.
Ben Winston is a British producer and director, who established the production company Fulwell 73 with Gabe Turner, Ben Turner and Leo Pearlman.
 He is well known as co-executive producer of "The Late Late Show with James Corden" alongside Rob Crabbe and Mike Gibbons and the show's segments "Carpool Karaoke" and "Drop the Mic".
 Winston is the youngest show producer of a Late Night show in America.
 The American talk show broadcast on CBS was launched in 2015.
 He has collaborated with a number of artists, most notably One Direction, JLS, Robbie Williams, Gary Barlow and James Cordon.
 He has produced and directed a number of pop culture oriented films, documentaries, concerts and music videos.
 He is also renowned for producing a number of the annual Brit Awards from 2011 to 2014.
 More recently he was a co-producer of US Grammy Awards and Tony Awards.
Mike McNulty (1887 - 1965) was an old time, old style and old method boxing manager and trainer, who managed and trained several world champion boxers during the first half of the 20th century, including Mike O'Dowd, Johnny Ertel, Mike Gibbons and, also, trained Mike’s brother Tommy Gibbons, the Ring Boxing and International Boxing Hall of Fame.
 In 1965, Mike McNulty died at Studio City Convalescent Hospital in Studio City, California at the age of 78.
The Ben Show (also known as The Ben Show With Ben Hoffman) is an American sketch comedy television series created and hosted by comedian Ben Hoffman.
 The series premiered on February 28, 2013, on the American cable television network Comedy Central.
 Hoffman, Mike Gibbons, Itay Reiss, Derek Van Pelt, and Judi Brown Marmel serve as the show's executive producers.
Edward Stanley Gibbons (21 June 1840 – 17 February 1913) was an English stamp dealer and founder of Stanley Gibbons Ltd, publishers of the famous Stanley Gibbons stamp catalogue and other stamp-related books and magazines.
Michael Joseph O'Dowd (April 5, 1895 in St. Paul, Minnesota – July 28, 1957) was an American boxer who held the World Middleweight Championship from 1917 to 1920.
 He won the title on November 14, 1917 by knocking out Al McCoy in the sixth round after dropping him six times.
 O'Dowd was the only active boxing champion to fight at the front during World War I (1918, while serving in the U.S. Army).
 During his career he claimed victories over Hall of Famers Jack Britton, Mike Gibbons, Kid Lewis and Jeff Smith.
 On February 25, 1918, he held the legendary Harry Greb to a draw.
 O'Dowd was knocked out just once in his career, his last fight on March 16, 1923.
 He was inducted into the Minnesota Boxing Hall of Fame in 2011 and the International Boxing Hall of Fame in 2014.
Mike Gibbons (July 20, 1887 in St. Paul, Minnesota – August 31, 1956) was an American boxer from 1908 to 1922.
 The brother of heavyweight Tommy Gibbons, Mike claimed Middleweight Champion of the World status in 1909 following Stanley Ketchel's murder.
 Although he never won the title, Gibbons is regarded as one of the all-time best welter and middleweight boxers by historians.
 Statistical boxing website BoxRec lists Gibbons as the #18 ranked middleweight of all time, while "The Ring Magazine" founder Nat Fleischer placed him at #9.
 The International Boxing Research Organization rates Gibbons as the 17th best middleweight ever and boxing historian Bert Sugar placed him 92nd in his Top 100 Fighters catalogue.
 Gibbons retired due to deteriorating vision.
 Following his boxing career he entered business in his native St. Paul, and became a member of the Minnesota Athletic Commission.
 Gibbons was elected to the Ring Magazine Hall of Fame in 1958, the International Boxing Hall of Fame in 1992, the World Boxing Hall of Fame in 1997, and the Minnesota Boxing Hall of Fame in 2010.
Stanisław Kiecal (September 14, 1886 – October 15, 1910), better known in the boxing world as Stanley Ketchel, was a Polish American professional boxer who became one of the greatest World Middleweight Champions in history.
 He was nicknamed "The Michigan Assassin."
 He was murdered at a ranch in Conway, Missouri, at the age of 24.

Question: Mike Gibbons and Stanley Ketchel were both what type of people?
Answer: boxer