I think his more recent work is more relevant. So far, a decent class of rookies and UDFA.
https://www.nbcbayarea.com/news/sports/csn/raiders/Analyzing_Jon_Gruden_s_2018_Raiders_rookie_class-498163481.html
Let's take a look at the rookies contributing (or, in one case, set to contribute) to this year's squad:
LT Kolton Miller: The UCLA product has struggled the last few weeks playing through injury, but there's a strong belief Miller's the long-term solution at an important position.
DT P.J. Hall: An early-season ankle sprain has slowed his progress and dulled his impact. He isn't a hulk, but Hall could develop into a tenacious inside pass rusher who can push the pocket.
RT Brandon Parker: The small-school product has a long way to go, but must learn on the job now that Donald Penn's on injured reserve. He isn't doing half bad considering he missed most of training camp with an ankle issue.
DE Arden Key: He has all the bend, length and athleticism coaches want in an edge rusher. He's technically proficient, but must be more efficient to consistently impact the cornerback. There's room for improvement against the run and to avoid biting on play action and misdirection.
CB Nick Nelson: Gruden believes the Wisconsin cover man is finally healthy and ready to contribute after tearing his meniscus during the pre-draft process. He has been inactive most weeks.
DT Maurice Hurst: Hurst will be viewed as a fifth-round steal in time. Hurst is the Raiders' most polished rookie, and has been effective against the run and pass. He could be a mainstay in the starting lineup.
P Johnny Townsend: The Florida product has disappointed thus far, proving unable to flip field position in the Raiders' favor. He hasn't shown enough power, and has shanked too many to be acceptable at the pro level.
LS Trent Sieg: Sieg has been a serviceable replacement after Andrew DePaola tore his ACL.
K Matt McCrane: He has missed four field goals in three games, and kickoffs haven't been steadily deep enough. McCrane must do better, or the team could look to another kicker.
LB Jason Cabinda: The undrafted rookie was promoted from the practice squad after Derrick Johnson was released. Cabinda will make his NFL debut next week against Indianapolis
Drafted players who didn't make the regular-season roster: LB Azeem Victor (waived), WR Marcell Ateman (on practice squad),
Undrafted players on IR or practice squad. RB Chris Warren III (IR), WR Saeed Blacknall (practice squad); K Eddy Piñeiro (IR), FB Ryan Yuracheck (practice squad), TE Paul Butler (practice squad), S Dallin Leavitt (practice squad)