I won't begin to claim I know the farm machinery business well but here is a little what I do know. Most small tractors are made in Asia because they use so many small tractors there. Yanmar makes a lot of the smaller Deeres, deere has a plant in Georgia assembles certain models but they use a lot of Yanmar parts. Small masseys are often made in Asia, turkey and brazil. New Holland Boomers are assembled in the US but I'm not sure where the parts come from. Kubota assembles some models here but again I don't know where parts come from. It's not unusual for a factory to turn out a variety of colors made to varying specs.
The important thing is having a good dealer where you can get parts and service because if you use it it will break. I'm lucky I have an Agco dealer 2.5 miles away, Kubota 5 miles, NH about 7, 2 Deere within 15 miles, IH about 15. So I can consider any name brand and not worry about service.