Was curious how these better OLs were constructed so I looked at the top 3.
Broncos
LT: Garett Bolles - 1st round (20th overall) 2017 draft out of Utah. Had a horrific rookie season, and was an absolute penalty machine early in his career, but was somehow able to turn it around and become one of the best LTs in the league.
LG: Ben Powers - 2023 FA (4 years, $51m). Signed basically the minute free agency started as part of a push by the Broncos front office to be aggressive in fixing their OL after the first year of the Russell Wilson era disappointed. Powers was fresh off a phenomenal season in Baltimore where he didn't give up a single sack.
C: Luke Wattenberg - 5th round pick in 2022 out of Washington. Barely played his first two seasons and was only in on 4% of the Broncos offensive snaps a year ago, but has settled nicely into the starting center spot this season.
RG: Quinn Mienerz - 3rd round pick in 2021 out of Wisconsin-Whitewater
RT: Mike McGlinchey - 2023 FA (5 years, $87.5m). Signed the same day as Powers. Was a former top 10 pick of the Niners who looked like a star early, but fell out of favor due to injuries and struggles in pass protection. Was largely seen as a significant overpay by the Broncos.
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Tampa Bay
LT: Tristan Wirfs - 1st round pick in 2020 out of Iowa (13th overall). Has basically been one of the league's elite LTs since he first stepped onto the field.
LG: Ben Bredeson - 2024 FA (1 year, $3m). Cheap free agent signing in March who started 16 games for a horrific Giants OL a year ago.
C: Graham Barton - Rookie 1st round pick (26th overall) out of Michigan. Already looking like one of the league's best centers.
RG: Cody Mauch - 2nd round pick in 2023 out of North Dakota State
RT: Luke Goedeke - 2nd round pick in 2022 out of Central Michigan
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Green Bay
LT: Rasheed Walker - 7th round pick in 2022 draft out of Penn State
LG: Elgton Jenkins - 2nd round pick in 2019 draft out of Mississippi State
C: Josh Myers - 2nd round pick in 2021 draft out of THE Ohio State
RG: Sean Rhyan - 3rd round pick in 2022 draft out of UCLA
RT: Zach Tom - 4th round pick in 2022 draft out of Wake Forest
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Not sure what conclusions can be drawn from all that. I guess don't overlook the small school prospects. Only one of those three teams made significant use of free agency.