I also found with lichess that blitz players are a lot stronger than rapid - I'm 200 points higher on rapid than blitz and it seems that's pretty common, which

I also found with lichess that blitz players are a lot stronger than rapid - I'm 200 points higher on rapid than blitz and it seems that's pretty common, which has always confused me (and not hugely different time controls - 5+3 vs. 10+0)