How many high can earth buildings go?

Hi Eclipse, this "code" from New Mexico lists the maximum height of rammed earth structure walls at 12 feet (a little less than four meters) depending on the wall thickness: https://www.midwestearthbuilders.com/code.html
This article states maximum wall height is ten times the wall thickness: https://www.greenhomebuilding.com/QandA/adobe/structural.htm
Many mud brick buildings are multiple stories tall: https://www.touropia.com/amazing-mud-brick-buildings/