You can modify the data - many of us do - but for about 10 years now we haven’t been able to get Plex interested in actually displaying that info.
‘The Names’ of sub and audio tracks remain ‘a user mystery’.
You’ll have to do like the rest of us - make your best guess.
Here’s the dusty feature request.
You definitely want to mask-up before going in there. Hard to tell what’s living in all that dust:
