DYNAMEX case. It is the ABC test that most states use to decide if someone is an employee or an IC for the purposes of the wage and compensation laws. I already told you this in previous posts.
Your problem is that while you think you are a cleaning (janitorial) service, what you are if you want to hire IC's to do the work, is a referral service where you contract with IC's that are independent contractors. I don't want to venture a guess how the courts would look at this. But if your service is to clean offices, then any IC you hire is doing the work that you customarily do. Right? That fails the B part of the ABC test and they would be employees.
If you are a referral business that contracts with IC's then you get a commission or fee for placing them in a contractual agreement for service with your clients. And likely from both sides if your smart.
The common law about IC's is evolving quickly. You should not rely on a message board for advice. You should consult a labor attorney for actionable advice.