There is no easy way and I'm providing here a manual way to find answer to your query. You can be creative and convert that into a workflow that loops through all the lists, gets their ID value and then search for workflows where it is used.
Get the ID value of your list. In my case it is 89656
Create a workflows view folder
Add a filtering condition on this view folder as this
I got the result I was looking for
So in an ideal scenario you might be using the default sequence XtkNewId and hence possibility of another entity having id="89656" is not possible.
But if you are using custom sequences there can be another entity. Thats why I added additional condition of checking the XML for keyword "readGroup" but then also it is not a full proof solution.