Informatica mapping to Azure Dataflow

Hi, I am working on converting informatica mapping to Azure Dataflow . In the informatica mapping , there is an expression transformation which consists of columns from 12unconnected lookups (each lookup pointing to different source file) which will be added to the target table. 

In ADF , I used 12 sources and 12lookups to connect these sources to the main source table to add the columns into the target table .

Did anyone worked on this kind of activity earlier ? How to achieve this in ADF without 12lookup activities ?