Hi,
We appreciate you reaching out to us.
There are no options in our API to prevent points collision.
Of course, you can write an individual implementation that checks for collisions when uploading, it seems to need more time for this.
Here is a topic describing collision logic for dataLabels:
viewtopic.php?t=40360#p139905
Are you want to prevent situations like on series[2] in point[0] and point[1], yes?.
https://jsfiddle.net/BlackLabel/ygb7equf/
Let me know how are you going with this solution.
Best regards.