I like to think Spock has a human name too. Like he chooses to go by his Vulcan name because he chose the Vulcan path.
And Amanda only calls him his human name when she’s super pissed at him (which is not often)
But could you imagine. Amanda and Sarek are being transported on the Enterprise and Spock does something uber dangerous and when Amanda finds out she stomps into the room he’s in and just shouts his human name and Spock just goes white and curses under his breath.
And of course Jim and McCoy are there and while Spock is fleeing, McCoy is changing his name in his health PADD and Jim is smiling and repeated the name over on his tongue.