Name mismatch
A name mismatch means the company on the ad, the company on the contract, and the company on the truck are not the same. A disclosed substitution can be legitimate. Three unexplained names means you stop and ask who has the car.
You may see a brand on the website, a legal name on the contract, and another name on the truck door. A broker brand plus a carrier's legal name is normal if the dispatch sheet predicted it. A third name that nobody will connect to a docket is not.
When it is substitution
Brokers often assign a carrier after booking. The contract's substitution clause either allows that or it does not. If it allows a change, you still get the new MC number before pickup, and you look it up. The legal name on SAFER should match the truck or the bill of lading.
When it is a problem
It is a problem when the driver cannot say which of the three names employs them, when the docket belongs to none of them, or when the price changes along with the name. Do not hand over the keys to close the confusion. RideShipper is not one of the three names on the load. The contract you signed names the company you can call.