Good question... Off the top of my head, light heavy might be up there. Top fighters Bivol Beterbiev Benavidez Solid fighters Callum Smith Ramierez Buatsi Lightweight is one to keep an eye on. Stevenson is the obvious talent, but Mason, Schofield and Noakes look very promising.
In my opinion the superwelter. The best of division are Ennis, Zayas, Ortiz Jr. and Fundora. Then there are Kelly, Murtazaliev, Adams, Madrimov, Tellez, Baraou and Samake. Champion, very good fighter and interesting prospect, great moment for this division.
126 for me - Espinoza, Figueroa, Shu Shu. On the fringes, there are the likes of Nick Ball, Angelo Leo, and Nery, some great fights to be made. Inoue looks like he will move up soon too.
Itauma vs Franklin Chisora vs Wilder Wardley vs Dubois Rico vs Usyk That is 4 separate PPVs Just for reference here is 1 PPV in 96 Don King put on Christy Martin fight Ricardo Lopez title defense Antonio Cermeno title defense Alexander Zolkin vs Henry Akinwande (WBO heavyweight title) Moore vs Botha (iBF heavyweight title) Tyson vs Holyfield (WBA heavyweight title)
there's a few that are stacked Light Heavyweight Beterbiev, Bivol, Benavidez, C Smith, Khataev, Morrell, Dzambekov, Kaladjzic, Gvozdyk, N Lopez, Ataev, Izmailov, Wallace, Unal, A Ramirez, Parker, Yarde, Buatsi, Hutchinson, Coe, Kraus, Whittaker, A Lopez, Velikovskyi Light Welterweight Stevenson, D Smith, K Davis, T Lopez, Hitchins, Russell, Martin, Hiraoka, Biyarslanov, Agrba, Matias, Puello, McComb, Barboza, Mercado, Bachkov, J Ortiz, O'Leary, E Vargas, Duarte, Azim, F Martin, Utria, Turarov, Kozlovsky, Chamberlain, Rafferty Heavyweight Usyk , T Fury, Kabayel, Wardley, Dubois, Joshua, Parker, Gassiev, Torrez, Hrgovic, Chisora, Huni, Ajagba, Bakole, Jalolov, Vianello, Okolie, A Ruiz, Anderson, H Fury, Miller, Teremoana, Light Middleweight Ennis, V Ortiz, Fundora, Kelly, Zayas, Murtazaliev, Madrimov, Thurman, Sosulin, Adams, Bohachuk, T Tszyu, Baraou, Katzourakis, Butaev, N Tszyu, C Walsh, Samake, Lucero, S Akhmedov
I think its got to be 154 right now. For weight classes above LW for sure. Every other weight class is going through a rough patch and all the top fighters migrated to 154. HW has depth but its been created by the champs refusing to fight anyone new for years. With real champions HW wouldn't(neccessarily) have this depth. HWs depth is also rapidly aging because of how long they've been waiting for title shots. LHW has or had 3 guys in the P4P top 10 which I'm pretty sure is a record for the division since P4P rankings have existed. But thats not really "depth" is it. LHWs depth is still better then MW and WW but thats not a high bar at the moment.