https://fred.stlouisfed.org/series/CES0500000003
https://fred.stlouisfed.org/series/LEU0252881500A
There simply isn't data to back this up.
What you are referring to is capital gains (CEO pay) compared to hourly pay (employee pay), which is a misleading apples to oranges comparison.
https://fred.stlouisfed.org/series/LES1252881600Q
Your nominal charts are extremely misleading. Real wages have gone up about 10% since the GFC. Is it up? Yeah, but that is quite a tiny amount annually, not even an additional pack of gum.
I assumed it was the infamous wage vs productivity chart.
https://www.epi.org/productivity-pay-gap/
This certainly aligns a lot better with what they're saying than talking about executive pay (though I'm sure that's also part of the problem).
Though, I don't think it's possible to talk about this without also talking about the ludicrous salaries now drawn by the executives either.