Interesting look at the last decade and whether the first QB chosen was best in class:
https://www.hogshaven.com/2021/4/5/2...is-draft-class
Summary:
33% of time first QB chosen is best in class
On a year to year basis The top QB in the class was found in the top 10 draft picks 56% of time
18 QBs were identified as long term starters. 11 of 18 (61%) top 10 picks, 2 of 18 (11%) picks 11-32, 5 of 18 (28%) rounds 2-4.