Mistrzowie
MMA
Strawweight (słomkowa)- 115 funtów; 52.2kg; skrót SW
Świat:
- UFC champion – b/d
- Bellator champion – b/d
- PFL champion – b/d
- ONE Championship* champion – Jarred Brooks
- ACA champion – b/d
Polska:
- KSW champion – b/d
- FEN champion – b/d
Flyweight (musza)- 125 funtów; 56.7 kg; skrót: FLW
Świat:
- UFC champion – Brandon Moreno
- Bellator champion – b/d
- PFL champion – b/d
- ONE Championship champion – Demetrious Johnson
- ACA champion – Kurban Gadzhiev
Polska:
- KSW champion – b/d
- FEN champion – b/d
Bantamweight (kogucia)- 135 funtów; 61.2 kg; skrót: BW
Świat:
- UFC champion – Aljamain Sterling
- Bellator champion – Sergio Pettis
- interim champion – Raufeon Stots
- PFL champion – b/d
- ONE Championship champion – Fabricio Andrade
- ACA champion – Oleg Borisov
Polska:
- KSW champion – Jakub Wikłacz
- FEN champion – b/d
Featherweight (piórkowa)- 145 funtów; 65.8 kg; skrót: FW
Świat:
- UFC champion – Alexander Volkanovski
- Interim champion – Yair Rodriguez
- Bellator champion – Patricio “Pitbull” Freire
- PFL champion – Brendan Loughnane
- ONE Championship champion – Tang Kai
- ACA champion – Alikhan Suleymanov
Polska:
- KSW champion – Salahdine Parnasse
- Interim champion – Robert Ruchała
- FEN champion – b/d
Lightweight (lekka)- 155 funtów; 70.3 kg; skrót: LW
Świat:
- UFC champion – Islam Makhachev
- Bellator champion – Usman Nurmagomedov
- PFL champion – Olivier Aubin-Mercier
- ONE Championship champion – Christian Lee
- ACA champion – Abdul-Aziz Abdulvakhabov
Polska:
- KSW champion – Marian Ziółkowski
- Interim champion – Salahdine Parnasse
- FEN champion – Łukasz Charzewski
Welterweight (półśrednia)- 170 funtów; 77.11 kg; skrót: WW
Świat:
- UFC champion – Leon Edwards
- Bellator champion – Yaroslav Amosov
- PFL champion – Sadibou Sy
- ONE Championship champion – Christian Lee
- ACA champion – Vitaly Slipenko
Polska:
- KSW champion – b/d (Adrian Bartosiński lub Artur Szczepaniak na XTB KSW 81)
- FEN champion – Cezary Oleksiejczuk
Middleweight (średnia)- 185 funtów; 83,9 kg; skrót: MW
Świat:
- UFC champion – Alex Pereira
- Bellator champion – Johnny Eblen
- PFL champion – Louis Taylor (2018)
- ONE Championship champion – Reinier de Ridder
- ACA champion – Magomedrasul Gasanov
Polska:
- KSW champion – b/d
- FEN champion – Piotr Kuberski
Light Heavyweight (półciężka)- 205 funtów; 93 kg, skrót: LHW
Świat:
- UFC champion – Jamahal Hill
- Bellator champion – Vadim Nemkov
- PFL champion – Rob Wilkinson
- ONE Championship champion – Anatoly Malykhin
- ACA champion – Muslim Magomedov
Polska:
- KSW champion –Ibragim Chuzhigaev
- FEN champion – Eder de Souza
Heavyweight (ciężka)- 265 funtów; 120.2 kg; skrót: HW
Świat:
- UFC champion – Jon Jones
- Bellator champion – Ryan Bader
- PFL champion – Ante Delija
- ONE Championship champion – Arjan Bhullar
- interim champion – Anatoly Malykhin
- ACA champion – Alikhan Vakhaev
Polska:
- KSW champion – Phil De Fries
- FEN champion – b/d
WMMA
Atomweight (atomowa)- 105 funtów; 47.6 kg; skrót AW
Świat:
- UFC champion – b/d
- Bellator champion – b/d
- PFL champion – b/d
- ONE Championship champion – Angela Lee
- Invicta FC – Jillian DeCoursey
Polska:
- KSW champion – b/d
- FEN champion – b/d
Strawweight (słomkowa)- 115 funtów; 52.2 kg; skrót SW
Świat:
- UFC champion – Weili Zhang
- Bellator champion – b/d
- PFL champion – b/d
- ONE Championship champion – Jingnan Xiong
- Invicta FC – Valesca Machado
Polska:
- KSW champion – b/d
- FEN champion – b/d
Flyweight (musza)- 125 funtów; 56.7 kg; skrót: FLW
Świat:
- UFC champion – Alexa Grasso
- Bellator champion – Liz Carmouche
- PFL champion – b/d
- ONE Championship champion – b/d
- Invicta FC – Ketlen Souza
Polska:
- KSW champion – b/d
- FEN champion – b/d
Bantamweight (kogucia)- 135 funtów; 61.2 kg; skrót: BW
Świat:
- UFC champion – Amanda Nunes
- Bellator champion – b/d
- PFL champion – b/d
- ONE Championship champion – b/d
- Invicta FC – Talita Bernardo
Polska:
- KSW champion – b/d
- FEN champion – b/d
Featherweight (piórkowa)- 145 funtów; 65.8 kg; skrót: FW
Świat:
- UFC champion – Amanda Nunes
- Bellator champion – Cris Cyborg
- PFL champion – b/d
- ONE Championship champion – b/d
- Invicta FC – b/d
Polska:
- KSW champion – b/d
- FEN champion – b/d
Lightweight (lekka)- 155 funtów; 70.3 kg; skrót: LW
Świat:
- UFC champion – b/d
- Bellator champion – b/d
- PFL champion – Larissa Pacheco
- ONE Championship champion – b/d
- Invicta FC – b/d
Polska:
- KSW champion – b/d
- FEN champion – b/d
*W przypadku kategorii ONE Championship ważenie odbywa się w dniu walki w związku z czym limity wagowe są przesunięte – kategoria lekka to 77 kg zamiast 70 kg, kategoria półśrednia to 84 kg zamiast 77 kg itd.