I got curious what the wealth distribution looks like when normalized to account for retirement account growth. The historical average of the S&P 500's inflation-adjusted rate of return is ~7%. According to [0], the actual YoY increase of net worth between age bands is less than that:
Median household net worth by age
35-44: $135600
45-54: $247200 (+6.19%)
55-64: $364500 (+3.96%)
65-74: $409900 (+1.18%)
Average household net worth by age
35-44: $549600
45-54: $975800 (+5.91%)
55-64: $1570000 (+4.87%)
65-74: $1790000 (+1.32%)