Dallas McCarver's diet/training "guru" (John O Reagan the old creepy guy who seems to love picking up young up and comers) is known to put his "athletes" on very high doses. Blasting with "turkey baster" as Doggcrapp would call it.
I'm willing to bet that a lot of the young up and comers like Nick Trigili, Cody Lewis, Nick Medici, Dallas McCarver, just to name a few, are using very high doses. And these are guys are in their early 20's. But having started so early on, perhaps we might see some of these guys on the olympia stage in 10 years who have been blasting hard in their upper teens/early 20's which is increasingly common nowadays.
I mean, big Ramy is 27, and claimed to have trained for only 3 years. Which may imply he has been juicing hard since the age of 24.
As for the example of Shawn Ray, have you noticed he never grew much after winning his pro card at 21? Which leads me to believe he started using very high doses VERY early, like 19-20 y/o