I'd assume they all have to have names, and it's been driving me nuts not knowing. It's just a matter of IF A THEN B. These cinematics have scripts. How do these scripts differentiate between them? Does it say "THE MIDLANDER SAYS" and then "THE ELEZEN REPLIES" (much like my own lore write-up)?
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However, you have to admit, they might just have silly everyday code-names around the office. The script could just call for Hiroshi and Akira to do this while little lalafell Reiko does that... While this doesn't seem likely with SE's depth of lore, it's still possible that they had a conversation equivalent to, "What do we call them in the script?" "I don't know. Bob? He looks like a Bob." and then flash forward to planning The End of an Era, "Okay, Bob's gonna do Steel Cyclone."