It’s one of those things that is overlooked by most fans come draft season.
But it’s imo one of the most important parts of a roster depth and draft strategy.

https://bleacherreport.com/articles/1953863-why-second-year-nfl-players-tend-to-make-big-leaps

https://www.packers.com/news/inbox-second-year-jumps-are-vital-to-the-future-of-every-nfl-team
.
https://www.patspulpit.com/2022/8/24/23319826/bill-belichick-second-year-jump-mba-doctorate-football-patriots-mac-jones

The Packers are in a very good position for players to make a second year jump.

You start with the entire 2022 draft class.
That class has three players in the top 34 of the draft.
The next part is how many of these players earned playing time in 2022.
After the draft class you have Caleb Jones, Tyler Goodson, Bo Melton and some 2nd year players like Gaines, Jean Charles.
And a number of others.
Most fan blow these players off wanting that next draft pick.
But every team in the NFL have players that made that jump or developed over multiple seasons to become core players.