Representing data like history graph WITHOUT time between

I have MQTT and other sensors set up that only update once a variable is changed. This change may happen over 5 minutes or 5 days but I was looking for a way of representing that data time independent. Is it possible?

Possibly if I could have the last 10 updates shown on a rolling bar chart?

How about this?

Rather than a chart you can list the last 10 changes.