I know he was a free agent signing, but I just read an interesting note on Sammy Watkins that indicated that he was PFF's top-graded blocker from the WR position the last three years. Obviously Gute and Lafleur have a type at WR ... long arms, strong, huge catch radius. Watkins is probably on the small end of what they typically target at 6'1" and 210-215 lbs. But he is a hell of a downfield blocker.
That makes me think that the Packers aren't going to consider players like Olave and Dotson, who are not graded well in that area. WRs who do have strong run blocking grades include George Pickens, Treylon Burks, Jalen Nailor, John Metchie, and Alec Pierce.
If Burks is there at 22, I think he'll be a Packer. If he isn't, I think they take Pickens at either 22 or 28. Pierce is a very strong 2nd round possibility.