So I did it and made a HW BMI list. Compiled a leaderboard of all HW title fight and some important regional weights from boxrec. While some weights are clearly missing its like 95 coverage especially for recent years. Since theres no way I'm posting an 1000 figure list I just am giving you the highs and the lows. Just kept it to world title fights. Highs 36.4 122019 Andy Ruiz 35.1 112000 David Tua 34.6 061939 Tony Galento 34.4 062019 Andy Ruiz 33.8 122022 Derek Chisora 33.6 101935 George Godfrey 33.6 122004 Danny Williams 33.6 042014 Alex Leapai 33.5 062002 Mike Tyson 33.3 022025 Zhilei Zhang 33.2 062007 Shannon Briggs 33.1 021990 Mike Tyson 33.1 102023 Francis Ngannou 32.8 102006 Nikolai Valuev 32.8 122016 Andy Ruiz 32.6 112006 Shannon Briggs 32.4 011887 John L Sullivan 32.4 122005 Nikolai Valuev 32.3 121913 Jim Johnson 32.3 111997 George Foreman 32.3 091998 Vaughn Bean 32.2 012007 Nikolai Valuev 32.2 122008 Hashim Rahman 32.1 062006 Nikolai Valuev 32.1 072019 Oscar Rivas 32.0 041991 George Foreman 31.9 042007 Nikolai Valuev 31.8 041995 George Foreman 31.8 111996 Mike Tyson 31.8 082008 Nikolai Valuev 31.7 061909 Tony Ross 31.7 111986 Mike Tyson 31.7 012008 Matt Skelton 31.6 031934 Primo Carnera 31.6 081987 Mike Tyson 31.6 112009 Nikolai Valuev 31.5 031996 Mike Tyson 31.5 111996 George Foreman 31.5 041997 George Foreman 31.5 062006 Owen Beck 31.5 072019 Dillian Whyte 31.4 031987 Mike Tyson 31.4 071989 Mike Tyson 31.4 091996 Mike Tyson 31.3 051987 Mike Tyson 31.2 061988 Mike Tyson 31.2 021989 Mike Tyson 31.2 061997 Mike Tyson 31.2 122003 Hasim Rahman 31.1 041900 James Jeffries 31.1 101933 Primo Carnera 31.1 031942 Abe Simon 31.1 111994 George Foreman 31.1 122008 Nikolai Valuev 31.1 032016 Tony Thompson 31.0 031941 Abe Simon 31.0 032002 Frans Botha 31.0 012007 Jameel McCline 31.0 092010 Samuel Peter 30.9 041941 Tony Musto 30.9 101987 Mike Tyson 30.9 011988 Mike Tyson 30.9 031998 Mike Tyson 30.9 081995 Joe Hipp 30.9 122003 John Ruiz 30.9 042005 John Ruiz 30.8 061934 Primo Carnera 30.8 091995 Frank Bruno 30.8 042004 John Ruiz 30.8 042022 Dillian Whyte 30.7 031984 Greg Page 30.7 041985 Greg Page 30.7 011986 Tony Tubbs 30.7 031996 Frank Bruno 30.7 112004 John Ruiz 30.7 082008 John Ruiz 30.7 082020 Dillian Whyte 30.6 041935 Bruce Seldon 30.5 101931 Primo Carnera 30.5 111996 Crawford Grimsley 30.5 122005 John Ruiz 30.5 052017 Razvan Cojanu 30.5 102017 Carlos Takam 30.4 061933 Primo Carnera 30.4 051972 Ron Stander 30.4 121984 Greg Page 30.4 081985 Bruce Seldon 30.4 021997 Oliver McCall 30.4 072000 Frans Botha 30.4 122002 Jameel McCline 30.4 012008 Ruslan Chagaev 30.3 031968 Buster Mathis 30.3 101990 Buster Douglas 30.3 021993 Dokes 30.3 061993 Lennox Lewis 30.3 042007 Ruslan Chagaev 30.2 042001 Hasim Rahman 30.2 062002 Ray Mercer 30.2 052005 Andrew Golota 30.1 041915 Jack Johnson 30.1 091995 Oliver McCall 30.1 032001 Derrick Jefferson 30.1 022009 Ruslan Chagaev 30.1 032021 Dillan Whyte 30.0 031980 Leroy Jones 30.0 091892 John L Sullivan 30.0 112001 Hasim Rahman 30.0 122016 Joseph Parker 30.0 082018 Francesco Pianeta 30.0 122024 Tyson Fury 30.0 022025 Agit Kabayel Lows 24.0 051892 Slavin 24.0 061897 Goddard 24.0 041928 Schmeling 23.9 091990 Slavin 23.9 101906 Jim Flynn 23.9 031913 Wells 23.9 122018 Wilder 23.9 122018 Wallin 23.8 121996 Fitzsimmons 23.8 071914 Carpentier 23.8 111965 Terrell 23.7 061897 Maher 23.7 121919 Carpentier 23.6 071902 Fitzsimmons 23.6 051907 Philadelphia Jack O Brien 23.6 051923 Ermino Spalla 23.6 061946 Conn 23.5 091892 Corbett 23.5 061896 Corbett 23.5 031898 Choynski 23.5 061913 Carpentier 23.5 121913 Wells 23.5 071923 Tommy Gibbons 23.4 081888 George Godfrey 23.4 111896 Denver Ed Smith 23.4 031913 Gunboat Smith 23.4 071914 Gunboat Smith 23.4 111970 Bob Foster 23.3 111895 Peter Maher 23.3 061913 Wells 23.1 111906 Philadelphia Jack O Brien 23.0 051909 Philadelphia Jack O Brien 23.0 031965 Terrell 22.9 031897 Fitzsimmons 22.9 061899 Fitzsimmons 22.8 081898 Armstrong 22.6 021896 Fitzsimmons 22.6 061941 Conn 22.1 051983 Charlie Mitchell
BMI is a totally bull**** metric. Literally no one takes it as useful way of measuring athletes. The entire NFL is morbidly obese according to BMI. Prime Mike Tyson was about 220 pounds give or take. According to BMI, the 5'10 Tyson should way no more than 170 pounds to be considered "in shape"