Comment by spizder

https://www.401k.live/

Public dataset for exploring 50,000+ 401(k) plans holding $7.5T in assets.

You can look inside a company like Google and see what employees invest in (mostly 2035-2055 target date funds) or how much they contribute ($30K - likely using Mega Backdoor Roth)

https://www.401k.live/plans/google-llc/