This information is a bit dated but ...

Since "nm" is meaningless these days, the transistor count/mm2 is below.

As reference: TSMC 3nm is ~290 million transistors/mm2 (MTr/mm2).

             IBM      TSMC   Intel   Samsung
  22nm                       16.50  
  16nm/14nm          28.88   44.67   33.32
  10nm               52.51  100.76   51.82
  7nm                91.20  237.18   95.08
  5nm               171.30    
  3nm               292.21    
  2nm        333.33

https://www.techradar.com/news/ibm-unveils-worlds-first-2nm-...

I think the intel 7nm is unrealistic. If true intel wouldn’t be “behind”

According to Wikipedia intel 7nm density is ~62 MTr/mm2. I cannot find the source wikichip page mentioned in your reference post.

FWIW, I am not in the semi industry and all my info are from Wikipedia https://en.m.wikipedia.org/wiki/7_nm_process https://en.m.wikipedia.org/wiki/2_nm_process