As another commenter mentioned you may or may not consider my experience as selection bias. So with that out of the way:

- all H1B friends I know obviously are from work; I used to work at one of the FAANGs - these friends are in late 20s and above, so at least SDE 2 if not more senior - you can verify at levels.fyi that 250+ TC is normal for these roles

I'm interviewing a lot for my company and I recall in the height of the hiring boom that peaked around 21, we really are throwing out 200-300 TCs for fresh graduates, Americans or not