Was listening to the podcast just now. Couple notes:
No issues with Campbell's length. His actual question is with his strength. Also doesn't like the upright stance, but some coaches teach that.
He likes Membou better than Campbell. Says that he has agility and you could try him out at LT. But, he's struggled with quickness off the edge on the right side, so that would only be magnified at LT. Also has questions about "grit." Says he doesn't always finish plays.
Likes Banks as a tackle, cites His athleticism and his ability to get in space on WR screens. Praised his ability. Likes him better than Campbell, up with Membou.
Likes Simmons a lot. More than Campbell. More than Membou. Praises his agility, smooth athlete. Like Banks, has the ability to get out in space and block, specifically mentions ability on screens and short passes. True left tackle.
Conerly is his top lineman. Loves his all around game. All the traits of a premier tackle. Good hands, good feet. Praised Oregon's OL coach for his development. Only wart is a narrow base in the run game.
My take is he has it ranked Conerly, Simmons, Banks/Membou, Campbell. Didn't explicitly say who was better between Banks or Membou, but does say Banks can play LT. And considering he praised and placed Conerly and Simmons higher because they're no doubt LT's, I'd assume he has Banks at 3.