In brief
list-style-type chooses a marker, such as a disc or numbering. It styles elements behaving as list items; it does not turn arbitrary text into a semantically structured list.
Useful to know
list-style-type chooses a marker, such as a disc or numbering. It styles elements behaving as list items; it does not turn arbitrary text into a semantically structured list. [1]
For ordered steps, start with the appropriate HTML list. Then choose a marker that supports reading. Do not rely on different symbols alone to communicate important categories or states.
Sources
For further detail and to check the information: