Uhhh, I've basically been winging it with Pearl's formalities ie. how she says your name. So if anyone has any issue like wanting Pearl to use the 'surname' instead of the 'given' name, just poke me here and I'll just retcon it or you could tell her ICly and she'll fix it.
Mystic _________:
Maya
Mia
Yoh
Anna
Horohoro
Lyserg
- most likely Ren, Hao
Miss _________:
Miyako
Trucy
Ema
von Karma - Surname
Gavin (go retcon go)
Mr _________:
Phoenix (Nick)
Edgeworth - Surname
Warren
Ryuutaros
People who topped Pearl out of using English titles
Minato
Zidane
Kizna
Raimei
......a lot