The common factor between each of those athletes mentioned is they all have ran elite times as a teenager and were/are somewhat tall. From a biological standpoint reaching adult height at an early age can be one indicator of physically maturing faster than peers but there are a other variables as well. I’d argue training age, muscular maturity, and height (at a young age) are going to be good indicators of an athletes potential to improve going forward compared to their youth times.
However it is also worth noting that some world class distance athletes are around 5’4-5’7 as an adult. For example, a youth athlete in that height range who has already reached their max adult height will stand out less than one who is as tall or taller than adult athletes (like the athletes mentioned) and could have less room to grow.
Not to ramble too much but I do personally believe that this sport has a slight bias when it comes to athletes running fast in their youth who are tall and somewhat muscular. The truth of the matter is the distance events at championship races like worlds and the Olympics are filled with athletes of various heights and weights.
I would argue that statistically the median elite distance athletes are 5’6-5’10 and 120-140lbs. This is just a rough estimate.
Going by that figure, youth athletes (or an adult athlete for that matter) exceeding that height figure or build is an outlier. I believe that progress is not linear and most youth athletes that run quickly and don’t improve as much as we hope did not acclimate great to a new coaching or living situation. Life is more than just running and other things can get in the way of it.