Last year I decided to follow the monthly attendance of the main Japanese promotions to see the current state of the scene with the best data we have at hand. Of course there are other indicators, but attendance is the only data that's publicly available to make this kind of updates and they are the most important source of revenue for all Japanese companies. I gather these numbers from Cagematch, Purolove and Weekly Pro Wrestling. I really recommend those databases if you want to check similar information of previous years.

Top selling promotions in September
>NJPW: 19219 fans (16 shows)
>Stardom: 9779 (12 shows)
>Dragon Gate: 6139 (15 shows)
>Noah: 5799 (6 shows)
>AJPW: 5114 (6 shows)
>DDT: 4345 (10 shows)
>BJW: 2032 (13 shows)
>TJPW: 1954 (6 shows)

Biggest events in September
>NJPW Destruction in Kobe (Will Ospreay vs Yota Tsuji): 4212 fans
>STARDOM 5 Star Grand Prix 2023 - Day 22 (Maika vs Suzu Suzuki): 2507 fans
>NOAH N-1 Victory 2023 - Day 9 (Go Shiozaki vs Kenoh): 2121 fans

Top selling promotions in 2023
>NJPW: 215830/209261* fans
>Noah: 93945/87376*
>Stardom: 77562
>Dragon Gate: 63296
>AJPW: 43996/37437*
>DDT: 28303
>BJW: 22222
>TJPW: 18726
*The first number includes the attendance of All Together Again

Results of the tournament season
With the 5 Star Grand Prix, the big singles tournament season is over and I thought it'd be good to look at how companies performed with their big tournaments this year.
>G1 Climax: 53277 fans (average 2804 fans)
>5 Star Grand Prix: 16062 (730)
>Best of the Super Juniors : 15287 (1274)
>New Japan Cup: 14914 (1356)
>N-1 Victory: 8461 (940)
>Champions Carnival: 8111 (811)
>King of Gate: 6669 (556)
>Cinderella Tournament: 4115 (1029)
>Tokyo Princess Cup: 2552 (365)
>King of DDT: 1117 (372)