I expect you wanted some actual dollar amounts.
So I'll give you mine, I hope they don't discourage you! :-)
We started our journey when we married in 1982.
We had $1M at the end of 2011. Our combined average income for those 30 years was $41,243.
Some of those years were low income, 11 years were under $25,000 a year.
We continued working 7 more years, and, with 2012 to 2018 being such a great time to be in the market,
we more than doubled our net worth 2012 to 2018.
Our average income for the full 37 years was $47,522.
Clearly it can be done on a lower income, it just takes longer, (numbers are like that).
We were frugal, but not absolute MMMer's.
Now retired, we can spend more than we ever did while working. Probably won't though!