TR: Pacquiao, Bradley, Cardford, Lomachenko, Postol (Not including Mikey) GBP: Alvarez, Matthysse, Hopkins, Ali, Linares PBC: Garcia, Stevenson, Lara, Frampton, Thurman I'm going mainly off resume.
Probably worth noting that PBC is a channel like Showtime, HBO, or Box Nation which does business with several different promotional companies so of course they have more fighters than any individual promotional company. Top Rank: 1.Manny Pacquiao 2.Juan Manuel Marquez 3.Nonito Donaire 4.Tim Bradley 5.Vasyl Lomachenko 6.Terence Crawford 7.Mikey Garcia 8.Victor Postol 9.Nicholas Walters 10.Brandon Rios Golden Boy Promotions 1.Bernard Hopkins 2.Saul Alvarez 3.Amir Khan 4.Mauricio Herrera 5.Lucas Matthysse 6.David Lemieux 7.Jorge Linares PBC 1.Erislandy Lara 2.Adonis Stevenson 3.Artur Beterbiev 4.Keith Thurman 5.Shawn Porter 6.Andrzej Fonfara 7.Danny Garcia 8.Carl Frampton 9.Amir Khan 10.Peter Quillin 11.Leo Santa Cruz 12.Danny Jacobs 13.Tomoki Kameda 14.Abner Mares 15.Lamont Peterson 16.Lee Selby 17.Deontay Wilder 18.Devon Alexander 19.Robert Guerrero 20.Adrien Broner Main Events 1.Sergey Kovalev 2.Tomasz Adamek Roc Nation 1.Andre Ward 2.Miguel Cotto K2 1.Gennady Golovkin 2.Wladimir Klitschko 3.Ola Afolabi 4.Mike Perez Sauerland 1.Mikkel Kessler 2.Arthur Abraham 3.George Groves 4.Kubrat Pulev 5.David Price 6.Denis Boytsov Maxroom Sport 1.Anthony Joshua 2.Kell Brook 3.James DeGale 4.Scott Quigg 5.Jamie McDonell 6.Nathan Cleverly 7.Lee Selby 8.Chris Eubank Jr 9.Martin Murray 10.Matthew Macklin Queensberry Promotions 1.Billy Joe Saunders 2.Paul butler 3.Alexander Ustinov Teiken Promotions 1.Roman Gonzalez 2.Shinsuke Yamanaka 3.Jorge Linares 4.Takashi Miura Ohashi Gym 1.Naoya Inoue Zanfer Promotions 1.Juan Fransisco Estrada DiBella Entertainment 1.Andy Lee 2.Ievgen Khytrov
For GBP you forgot Randy Caballero, DDLH, Frankie Gomez, Alfonso Blanco... (two world titlists and two blue chip prospects)