It's possible to show full point name on data under mouse pointer. It looks like:
It's really easy to show such names, only need to set one checkbox in trace style. Next actions depends on way Charts deals with data, but looks same.
If data in your charts goes through stream, open that stream's style. At first select your Charts and open stream.
Open styles group:
and scroll down to hover settings and check name field.
If data goes from traces you go to Traces group and choose trace:
Open Style subgroup, scroll down to hover values and check name field:
If you have other traces to show point names, make same actions for each other trace.
So, that's all you need to do to show pretty names with point data. Switch to Preview to check how it works and enjoy!