Before I dropped "top 50" I confirmed with FBG PPR WR rankings, which has Corey Davis at 52. Some players ranked ahead of him I think Davis is more talented: Mooney, Mecole, Beasley, Curtis Samuel, Marquise Brown, maybe Viska. Some players ranked behind him I think are better than Davis: AB, Devante Parker. That puts him at 49. FantasyPros has him at 44 in PPR.
Mr. Hot Sauce Guy and I were discussing WR talent, not expected fantasy outcome, so the above isn't a 1-to-1 comparison, but it's a good start. Davis is only 26 so he could still put together some 1k+ seasons with some improvement, but we've already seen he is a better WR2 than WR1 for a team.
Per your list above if I'm a GM I'd rather have the following players for this year (in addition to what you mentioned): Fuller, Jarvis Landry, Devante Parker, Juju, Sutton (assuming health), Jeudy, Boyd, Mike Williams, Chark, maybe Laviska. Not all these players win on the outside, but that's not a pre-requisite to be a top 50 WR IMO.
So Davis clocks in around 45. I was wrong to say "probably not" top 50. Regardless, hopefully E Moore is the best of the bunch to give Wilson the best opportunity to succeed. Crowder played well last year when he was on the field. It's still very much a below average WR unit that has more depth than talent at this point.