Would you happen to know the name of the bus shuttle company that picks up ppl from the car rental companies and drop them off at the ohate terminal?

Don't know. Probably part of the airport system.

I'm not sure of the name but there are multiple shuttles that go to the Rent-A-Car place were they have Alamo Enterprise all the rental car places are all in one building. Walk up and ask the bus drivers and they will tell you