I saw this picture where *none of the 3 seem to be standing straight up*, but it’s pretty obvious that RJ & Zion are shorter than Cam, and it looks likely that Zion is slightly shorter than RJ..
We all know player’s listed heights are measured in their shoes and then usually rounded up.. thats why Cam measured at 6 foot 6.5 inches (without shoes) at the combine, but is always listed as 6’8”..
From everything I’ve seen, Cam looks to be a solid 1-2 inches taller than RJ, and RJ looks to be about 0.5-1 inch taller than Zion.. So Zion could be as short as 6’4” without shoes..
Ultimately, it doesn’t matter because it’s not how tall you are, it’s how tall you play, and he plays like he’s 7ft.. but his athleticism is even more impressive with him being closer to 6’4” than 6’6”.. it makes his jumping ability look more like David Thompson and MJ (6’6” and under), rather than LeBron, Kemp, or Dominique (all 6’8” plus)..