I apologise, but it's obvious that the ability to change race and class of companions is nonsense, and it's not in BG 3. It's not said trivially anywhere but in this thread, there's no confirmation of it. Moreover, we have Queen saying that companions can't change their appearance or class, which is logical. Shedowheart can't be anything other than a Cleric, and Will can't be anything other than a Warlock. They can be multiclassed at the player's discretion from level 2, and that's exactly what would definitely be changeable: characterisation distribution, classes after the first, spell set. Basically, anything that doesn't define the character as such.
Characters already have lines where they refer to each other's races, Laezel's story is literally tied to her being a githyanki.
Please stop panicking and spouting nonsense taken literally out of nowhere.
