Getting people saved is the sign of success, but far too many church focus on other measures. I remember one church to which I belonged kept detailed records of the number of Bibles brought to Sunday service.
Most Protestant churches operate under supervision of some sort from a denominational body, but to label that supervision as a hierarchy is - with the exception, possibly, of the Episcopal church - something of a stretch.
Methodist Churches have a hierarchy of sorts. There are all sorts of officials and offices there. I’m sure most Protestant churches have some kind of umbrella they’re under from a higher authority. Most aren’t independent, unless it’s Baptist. Then there are non denominational churches but even they are usually under some kind of umbrella.