These are companies the subject never worked for. Why list a corporate headquarters for a company for which the subject never worked? And why would he list a supervisory or HR contact for, say Uber Eats? The subject never worked for Uber Eats. He never had a supervisor for Uber Eats. He was never hired by Uber Eats.
The subject may feel like he is working for Uber Eats, but the fact is that he is a vendor and Uber Eats is a customer. If I own a corner store, a customer may give me money in return for goods or services. That doesn’t mean I list the customer on my SF-86 as my supervisor. That doesn’t mean I list my customer’s house as a “corporate headquarters.” I am working for myself, am self-employed, and list my own business (or home, if that is where I keep records) as the corporate address. I might list a regular customer as a verified or person knowledgeable about my self employment, but the customer is not my supervisor or HR contact.
Driving for Uber Eats is self-employment.
Driving for Postmates is self-employment.
Driving for Doordash is self-employment.
By all means, note in “additional comments” that your self-employment as a driver includes vendor-customer relationships with Uber Eats, Postmates and Soordash. But you are not employed by these companies. You are self-employed. The goal here is to list all your employments fully accurately. By accurately identifying yourself as a self-employed delivery driver you are truthfully describing your employment history.
To identify Uber Eats as your employer would be false. The entire business model of the gig economy, including contract investigators, relies on this distinction. The big BI company I contract with may treat me as an employee, but I am most certainly NOT an employee. The company has spent many millions of dollars in class-action court litigation to make this distinction clear! I am a self-employed investigator.