This idea has been created on the behalf of an user from France.
The idea would be to be able to easily create tags that would either display the phase creation name or the phase demolished name (or both) of an element.
Currently, the only workaround is to create a shared parameter and manually fill this parameter value with the phases names.
Then to create a tag that displays this parameter value.
It’s possible to create a Dynamo script that automatically copy the phases name to the share parameters but this solution is not ideal.
FYI, an archived similar request had been created some time ago here:
https://forums.autodesk.com/t5/revit-ideas/phase-parameter-tag/idi-p/6325412