that sounds like the general trend of wages in the US to not adjust upwards since Reagan’s presidency

The data does not support this, wages have been in the 2-4% rate for a while now. Seems tied to economic conditions rather than who is president.

Source: https://www.epi.org/nominal-wage-tracker

The data does, really - on an off-hand search I found this[1], though I'm sure many more could be found. The US has trailed the rest of the world for decades on wage growth and income equality.

[1]: https://www.epi.org/publication/charting-wage-stagnation/