Strip Plot

I would like to be able to create a strip plot to show, for example spread of student marks across academic years. Whilst this is possible with a scatterplot I have to use Student ID (or similar) as the legend to get individual dots and then I end up with a zillion colours. If I could tell Power BI to make them all the same colour and translucent or hollow then I can use the existing scatter chart. If not a new strip plot would be great and a jittered strip plot would be a bonus.