LeClerc was fantastic in F2. I remember going to Silverstone 2/3 years on the bounce (can't remember exactly) and watching him absolutely blast his way to wins/podiums, even in the reverse grid races.
He was only in F2 for one year (like George) cos he was so good.....
https://en.wikipedia.org/wiki/Charles_Leclerc#Complete_FIA_Formula_2_Championship_results (the Reverse grid race at Silverstone he did get up to 5th)