NFL Scouting Combine: Feb 27–Mar 2

There's absolutely a reason he's not running the 40. He's probably a 4.6 guy (Mark Ingram speed). Which IMO does not matter and RB speed is pretty overrated but he's definitely not what I would consider "fast" for a RB.

The list of pro bowl level RBs under 5'9 with a 4.55-4.6 40 is not that long. I'd imagine it's maybe a few. Which again is fine because he's such an anomaly.
I would be blown away if Jeanty ran a 4.6
I mean he's definitely a 4.55-4.6 guy yes.

His speed is not his strength so it's pretty irrelevant for me. His contact balance, agility, and vision is what makes him a top 10 pick not his speed.

There's 100% a reason he's not participating at the combine. If he could run a 4.4 he would immediately solidify himself as a top 5 lock.
gonna have to respectfully disagree, when I watch Jeanty I see 4.4 speed, maybe high like 4.48-4.49 but still 4.4