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Well, pick a Miami QB from 86-92. Testaverde, Walsh, Erickson, Toretta.

Matt Leinart was another one. Probably a lot of FSU’s QBs during their great run from 87-2000. Ward, Kanell, Wills, Weinke.  Every Bama QB since Saban has been the there.

Ohio St and UGA QBs the last few years. Not that any of these guys weren’t good players in their own right but they were all surrounded by talent everywhere.

Okay, so this would make me want to rank each school's QBs in terms of perceived talent.  I'll just take Bama QBs under Saban.  They've all been blessed with great defenses, great college RBs, great everything, as you've noted.  Here they are:
07, 08 - John Parker Wilson
09, 10 - Greg McElroy
11-13 - AJ McCarron
14 - Blake Sims
15 - Jake Coker
16, 17 - Jalen Hurts
18, 19 - Tua Tagovailoa
20 - Mac Jones
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Saban obviously has changed his offensive tactics since 2018.  Judging by talent and not citing stats, I'd rank them:
Tua, McCarron, Jones, Sims, Wilson, McElroy, Hurts, Coker
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I guess when I think of Dorsey on Miami - he wasn't a weak link necessarily, but he was the weakest link of the team.  I don't think Tua was the weakest link of his Bama teams (injuries notwithstanding)...McCarron may have been in '11, but not after that.  I think, career-wise, maybe from Sims-on (in my rankings), you could say they were all the weakest links.  
So it's not 100%, but after the first couple, yeah.  

Who was the one other than DeMarco Murray?

Never mind.  Chris Brown.  I thought he might be the one, but I didn't remember that he had more yards than Murray did.

1220 to 1002.

Two very good backs.

But I was thinking "dominant" in the way the guy you mentioned in the OP--Barry Sanders--was dominant.  So no Adrian Peterson, Billy Sims, Steve Owens, Greg Pruitt, Joe Washington types.

I mean, he had two 1,000-yards backs and the best tight end in the country. I guess I'm playing the game wrong.

So is Jack Mildren a guy to name? Ran for nearly 1,300 yards and posted a 199.5 passer rating (on 5.6 passes a game).

I mean, he had two 1,000-yards backs and the best tight end in the country. I guess I'm playing the game wrong.

So is Jack Mildren a guy to name? Ran for nearly 1,300 yards and posted a 199.5 passer rating (on 5.6 passes a game).

You're playing the game correctly.
Mildren's QB card makes that OU team VERY dangerous in Whoa Nellie!

Well, pick a Miami QB from 86-92. Testaverde, Walsh, Erickson, Toretta.

Matt Leinart was another one. Probably a lot of FSU’s QBs during their great run from 87-2000. Ward, Kanell, Wills, Weinke.  Every Bama QB since Saban has been the there.

Ohio St and UGA QBs the last few years. Not that any of these guys weren’t good players in their own right but they were all surrounded by talent everywhere.

Leinart in the year Bush and White had all the carries, sure.  Great pair of WRs, too.  And a great D to keep getting him the ball back.  Yet Leinart is a 1st round pick, his NFL team surrounds him with little talent, and he stinks.  
I feel like it's rinse, repeat with this when it comes to QBs.  

Turner Gill. 

When I asked about when Osborne earnestly went to the option, Gill was cited by several Huskers here as the reason. 
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I'm worried this thread is dwelling more on system than perceived hierarchy of talent within a roster.  Idk, maybe not.  What say the Sea of Red?

Gill was a terrific college QB but the guy snapping him the ball was a 2 time Outland Trophy winner and was so good they created and named a trophy after him. He was handing to the Heisman Trophy winner and throwing to the Number 1 overall pick in the draft.

He fits the bill.

I think assigning credit on a football team is still in the stone ages. 
Like for a QB, how much does a great RB affect his production?  Or a good WR?  A good OL?  
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Good point about '83 UNL.