If there is a correlation to company size or company popularity (e.g., FAANG) I would have actually thought it would be large companies/FAANG are hiring the low-quality H-1Bs. I usually work at medium sized companies (50-200 engineers company-wide is my definition) where maybe 2-4% of the engineers are H-1B or green card. They've all been great. Even the one at Allstate (Allstate was also hugely reliant on India-based Infosys "developers" who I will yell from the mountaintops were straight garbage and very much net-negative).