By definition Elliot Oscillator is a "34 period Simple Moving Average of prices subtracted from a 5 period Simple Moving Average of prices displayed as a histogram above and below a zero line" (it is sometimes called a "5/34 Oscillator").
This version is doing exactly the same with only one difference: it allows you to chose periods of calculation. This way it is as simple as it gets and shows exactly what Elliot Oscillator indicator is about.
This version is the smoothed version of the original Range Oscillator + Bands indicator. Smoothing is cleaning up some false signals and, since the smoothing method is JMA (which has very small lag) the added lag is as small as it can be making it much easier to use in a lot of decision situations.Range Oscillator - Smoothed
This version of Range Oscillator has smoothing option in order to avoid some false signals.