This is more of a observation or thought experiment than any kind of technical analysis. The starting point of all data points is the SPX ATH. All other historical ATH values begin at the most recent ATH (January 22), and end whenever price returned to its respective ATH.
Time and Change is more important than Time and Price. It's easier to see this from a logarithmic view.
Historical data is color coded. Vertical lines represent lows.
Happy Holidays and may you be a part of the next cycle. Maybe the start is now? Maybe next year? Nobody can be sure.