Hello, I'm trying to figure out the best way to create a separate delineation within our team project. We essentially have 2 separate statuses for cards within our backlog, but the Jira backlog feature doesn't seem to allow for anything other than a full "Backlog" and separate sprints to be displayed/created. The main issue is we want to make sure that if work is finished in a sprint we have a prioritized, ready to play list of cards that any of our engineers can go and pick up without asking.
We've currently got around this by creating our board as seen below:

However, this has the big drawback of not being able to use the built in jira sprint features correctly (burndown, estimation, etc).
What would be a perfect solution to our issue is if we could create a separate Prioritized Backlog where we could drag pointed/refined/groomed cards up from the backlog/needs refinement section that would be ideal, but I don't know if such a thing is possible.

Any help, information, or suggestions would be greatly appreciated.