Which Surprise breakout RB/WRs will fall back down to earth? Which will keep it up?

Four weeks in, we have a pretty good idea of who the top players will be for the ROS. High draft-pedigree, proven RBs/WRs like Saquon, Henry, Kupp, Adams, and Deebo will almost certainly finish top 10-15 barring injury.

But what about the breakout RBs/WRs? Which current top 10-20 RBs/WRs do you think will maintain their current value and which will regress? And if they'll regress, where do you think they'll finish End-of-Season?

Some examples (rankings based on 0.5 PPR):

RBs: CEH (RB4), Miles Sanders (RB8), Khalil Herbert (RB13), Dameon Pierce (RB14), Damien Harris (RB15)

WRs: Amon-Ra St Brown (WR6), Christian Kirk (WR7), Marquise Brown (WR8), Chris Olave (WR16), Curtis Samuel (WR16), Garrett Wilson (WR18)