What is the best file format for a temporary table?

brickster_2018
Databricks Employee
Databricks Employee

As part of my ETL process, I create intermediate/staging temporary tables. These tables created are read at a later point in the ETL and finally cleaned up. Should I use Delta? Using Delta creates the overhead of running optimize jobs, which would delay my ETL. Enabling optimize writes also will add delay to my ETL

What is the best practice/recommendation here.