b8357287@HOTMAIL.COM

Bounded oscillators, like Stochastics and RSI. These have a vertical axis with values between 0 and 100.

You might like this chart school article. It's a little long, but it explains a lot about what different types of indicators there are and how you might use them. Pretty good resource considering what you would pay for a book, and the quality is really good.

https://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:introduction_to_technical_indicators_and_oscillators