Nigel Gregory Benn is a British former professional boxer who competed from 1987 to 1996. He held world championships in two weight classes, including the WBO middleweight title in 1990 and the WBC super-middleweight title from 1992 to 1996. He is considered one of the best Super Middleweights of all time.At the regional level, he held the Commonwealth middleweight title from 1988 to 1989. He scored notable wins over Champions Doug DeWitt, Iran Barkley, Thulani Malinga, Mauro Galvano and Gerald McClellan.
Paul James Smith Jr. is a British former professional boxer who competed from 2003 to 2017, and has since worked as a commentator. He held the English middleweight title in 2008, the British super-middleweight title twice between 2009 and 2014, and challenged three times for a super-middleweight world title. As an amateur, he won a silver medal in the light middleweight division at the 2002 Commonwealth Games.
Robert Brant is an American professional boxer who held the WBA (Regular) middleweight title from 2018 to 2019. As of November 2020, he is ranked as the world's sixth best active middleweight by the Transnational Boxing Rankings Board, eleventh by BoxRec and eighth by The Ring magazine.
José Carlos Ramírez is an American professional boxer. He is a former unified champion at light welterweight, having held the World Boxing Council (WBC) title from 2018 to 2021 and the World Boxing Organization (WBO) title from 2019 to 2021. As an amateur he represented the United States at the 2012 Olympics. As of June 2020, he is ranked as the world's second best active light welterweight by The Ring and BoxRec, and third by the Transnational Boxing Rankings Board.
Roy Gumbs is a Saint Kitts and Nevis/British professional middle/super middle/light heavy/cruiserweight boxer of the 1970s, '80s and '90s who won the British Boxing Board of Control (BBBofC) Southern (England) Area middleweight title, BBBofC British middleweight title, and Commonwealth middleweight title, and was a challenger for the International Boxing Federation (IBF) super middleweight title against Chong-Pal Park, his professional fighting weight varied from 157+1⁄2 lb, i.e. middleweight to 178+1⁄2 lb, i.e. cruiserweight.
Richard "The Secret" Williams is an English professional light middle/middle/super middleweight boxer of the 1990s, 2000s and 2010s who won the International Boxing Organization (IBO) light middleweight title, and Commonwealth light middleweight title (twice), and was a challenger for the International Boxing Organization (IBO) light middleweight title against Sergio Gabriel Martinez, and British Boxing Board of Control (BBBofC) British middleweight title against Howard Eastman, his professional fighting weight varied from 149+3⁄4 lb, i.e. light middleweight to 162+1⁄4 lb, i.e. super middleweight. Richard Williams is trained by Brian Lawrence, and managed by Barry Hearn, and John Rooney.
Andrew Moloney is an Australian professional boxer who held the WBA (Regular) super-flyweight title in 2020, having previously held the interim title since 2019. At regional level he held the WBA Oceania bantamweight title from 2016 to 2017 and the Commonwealth super-flyweight title in 2017. As an amateur, he won a gold medal at the 2014 Commonwealth Games in the flyweight division. As of June 2020, he is ranked as the world’s seventh best active super-flyweight by The Ring magazine, eighth by the Transnational Boxing Rankings Board and ninth by BoxRec.
Tony Harrison is an American professional boxer. He held the WBC light middleweight title from 2018 to 2019 and challenged once for the IBF light middleweight title in 2017. As of May 2022, Harrison is ranked as the world's fifth best active light middleweight by the Transnational Boxing Rankings Board and sixth by The Ring.
Vincent Feigenbutz is a German professional boxer. He held the WBA (Regular) super-middleweight title in 2016 and challenged for the IBF super-middleweight title in 2020.
Jaime Aarón Munguía Escobedo is a Mexican professional boxer. He held the WBO junior middleweight title from 2018 to 2019. As of June 2022, Munguía is ranked as the world's fourth best active middleweight by BoxRec, The Ring magazine and ESPN, and fifth by the Transnational Boxing Rankings Board. Munguía's knockout-to-win ratio stands at 79%.
Shavkatdzhon Shokirovich Rakhimov is a Tajikistani professional boxer. He held the International Boxing Federation (IBF) super-featherweight title from 2022 to 2023 and the International Boxing Organisation (IBO) super-featherweight title from 2017 to 2019. As of June 2023, he is ranked as the world's fifth best active super-featherweight by the Transnational Boxing Rankings Board, fourth by BoxRec and fifth by The Ring.
Hannah Rankin is a British professional boxer and bassoonist. She has held the WBA female super-welterweight title since November 2021. She has also held the IBO title in 2019 and challenged for the WBA female super-middleweight title in 2018; the unified WBA, WBC, and IBF female middleweight titles in 2018; and the WBO female middleweight title in 2020. As of October 2020, she is ranked as the fifth best active female middleweight by The Ring and sixth by BoxRec.
Jason Welborn is an English professional boxer who challenged once for the unified WBA (Super), IBF and IBO light-middleweight titles in 2018. At national level, he held the British middleweight title in 2018, and challenged for the British welterweight and light middleweight titles in 2013 and 2014 respectively, and the Commonwealth light-middleweight and middleweight titles in 2019 and 2020 respectively.
Aidos Yerbossynuly is a Kazakhstani professional boxer.
Kamil Szeremeta is a Polish professional boxer who held the European middleweight title from 2018 to 2019. As of June 2020, he is ranked as the world's seventh best active middleweight by The Ring and eighth by the Transnational Boxing Rankings Board.
Sandor Martin Clemente is a Spanish professional boxer who has held the European super-lightweight title since 2019. As of October 2021, he is ranked as the world's sixth-best active super-lightweight by BoxRec, and eighth by the Transnational Boxing Rankings Board.
Isaac Jonathan Cruz González is a Mexican professional boxer. As of November 2021, Cruz is ranked as the world's sixth-best active lightweight by the Transnational Boxing Rankings Board, eighth by BoxRec, and tenth by The Ring magazine.
Rizvan Elikhanov
Leonard Carrillo
Abraham Gabriel Buonarrigo
Jose de Jesus Macias
Nizar Trimech
Isaac Chilemba 
Abdallah Paziwapazi
Azizbek Abdugofurov 
Omar Garcia
Siarhei Khamitski 
Bartlomiej Grafka