RBs are valued lowly because the learning curve from CFB to the NFL is way lower than it is for TE. TE take a freaking minute to become productive in the NFL and Cole was pretty young when he came into the NFL. George Kittle's rookie year was when he was 24, Kmet's upcoming season will be his year 24. They're going to be paying for years 25 thru whatever with his next contract.
There's Kelce, Kittle and Andrews. Hockenson and Freiermuth are good but I'd put him right with them, Kyle Pitts is more gifted but his leg is busted so we'll see where he comes back to be, Goedert is nice. That's 7, you gunna put Evan Engram, Gerald Everett, David Njoku, Tyler Higbee as definite yeses over Cole? You're free to do that but he's young and he's been pretty healthy thus far and after looking at all of those dude's Pro-Football-Reference pages you see they didn't really start to hit their stride until they were 25 or so.