Pioneers get to name things, and computer pioneers are no exception.
You know you're on a cutting edge when you discover there's no name for what you are doing. Computer pioneers, like other pioneers, name things by mixing their heritage and their imagination. In an industry where many people are working on similar ideas, resulting in a lot of naming confusion in the pioneering period. There were so many names because so many engineers and so many companies were pioneering this technology at the same time. As the industry segment matures, the names settle out, and one or two forms become standard.