We know that the best players are not always the first ones chosen. There are many players who end up outplaying their counterparts who were drafted far ahead of them.
Alvin Kamara - very similar skill set to Christian McCaffrey, and actually one who would probably have a better chance to stick at RB
Curtis Samuel - almost as fast as John Ross, maybe not as polished as a WR, but may have even greater versatility, without the injury concerns
Bucky Hodges - probably as athletic as Njoku, but is not getting the same love; could be available in Round 3
Juju Smith-Schuster - a similar kind of WR to Mike Williams, but should be available two rounds later. We can't even be sure about how Mike Williams' skill will translate to the NFL; many compare him to Laquon Treadwell from last year
Jordan Willis - probably 2nd most athletic EDGE rusher next to Myles Garrett; even has the production to back it up, but might not even be picked in the 1st round
Chris Godwin - actually had the higher percentage of contested catches, which is what Mike Williams' calling card is supposed to be
Carlos Henderson - just like Curtis Samuel, a converted RB, maybe not as fast, but had the highest rate of broken tackles, I believe
Can you think of some more?