Adobe Experience Platform

Need help on AEP profile merge. I need to be able create a unified profile for customer data coming from different Profile datasets. I have 2 different profile datasets as given below, which have common identifier like ECID and Email as Primary Identities present in the schema. I am trying to ingest...

I have being digging around the documentation of Platform and I haven't been able to figure out if it is possible to create different entities apart from the customer inside Platform. I am thinking for example in creating a entity like products that would have its own unique ID (an SKU for example) ...