Well his catch radius just is what it is - what you'd expect from a 5'10" kid. However, his range is what puts him in a different category from most any receiver you'll ever see. You can't really over throw him because he can still accelerate to catch up with a ball that most guys can't. Whatever point it is that someone thinks he can't accelerate any more....he can.
Another thing that makes him unique is the Moss mentality he has for jump balls. He believes that ball is his and he's going to go up and get it at it's highest point. Even outjump multiple defenders to come down with it. Like I said last year after the combine, I believe Waddle would've been the second receiver in combine history to run sub 4.3 and post a 40" vertical after Henry Ruggs became the first to do it.
Waddles hands have been excellent.
Your post is spot on. He's the best in class at pretty much any trait you want to look at that translates to explosive plays. You can get the ball to him early and let his acceleration and agility do it for you - but also get it to him downfield and trust that he's going to come down with it. If his ankle is healthy I'd probably bet on Jaylen Waddle as the most likely offensive player in the draft to become a truly special player at the next level and one of the most electrifying players in the league for a long time.
He's been one of my favorite players to watch ever since he was in high school and was the one recruit I wanted more than any other in the 2018 class. He's a top 5 player on my board.