Fed Assets and Quantitative Tightening

What is the breakdown of the assets that the Fed hold and would be likely to unwind when quantitative tightening occurs? What areas of the market do you think this will affect?

I found this old article, but I'm sure things have changed since that was pre-covid.

https://research.stlouisfed.org/publications/economic-synopses/2019/04/05/what-to-expect-from-quantitative-tightening/