I chose the Sony 1000XM4 because the RTINGS graph showed the strongest cancellation in the 60Hz range. All my tormentors are in the AC-powered machine noise range.

https://www.rtings.com/discussions/adsg5oN7w-9Dgb3O/treadmil...

https://www.rtings.com/headphones/1-8/graph/25566/noise-isol...: