We have seen a few creatives who submit the same name across 20+ contests. Unfortunately, we do not believe it is appropriate to follow up with all CHs in that scenario.
In fact, we highly discourage you from submitting the same name across multiple open contests. What if you won two contests at simultaneously?
Still...even though you are not able to report the same name across multiple contests, you can always contact us if you want us to check the Who Is details with additional contest holders. If we find a match with any other contest holder, we will certainly follow up with them.