I think you could have gotten White's equivalent later, but also... I've said in other posts, if a RB is also an elite receiver I'm more willing to entertain him in the pre-150 picks, because that's not the same skillset. Stevenson is not an elite mismatch receiver like White was. He isn't going to flare out and run routes. To me a guy like Stevenson what are you hoping for... Blount? Who was UDFA and signed for almost vet min several times?
I look at the long list of UDFA and late round pick RBs who had success (Blount, Foster, Anderson, Jackson, Lindsay, Mostert, Carson, Robinson, Aaron Jones, Murray) and I see a position where you're not getting value if you use a pick early for a RB who is primarily a runner.