Answer
Metalworkers and weavers were the groups which were ranked as artisans in emerging social hierarchies in early river civilizations
Step-by-step explanation
Metalworkers were the people who worked in the making of different things using metal. They made jewels and other metal products.
Weavers used threads from trees such as sisal fiber and other sources.They made various types of clothing which many people shifted to and this promoted civilization because they stopped clothing on tradition clothes which were mostly made of animal skins.
So these two groups which are the Metalworkers and weavers were the highly ranked as artisans in emerging social hierarchies in early river civilizations