”Spadille” could be a good nickname for aroaces. It could be a neutral term that indicates anyone with no sexual and romantic attraction but without automatically assuming they do or don't use the SAM. And if they don't like to use the term aroace it could be used as an alternative.
It's based on the card symbolism in the ace community. Ace of hearts= romoace, Ace of diamond= demi, Ace of clubs = gray, Ace of spades = aroace. Another term for ace if spade is spadille( I've been informed ”spade” has unsavory connotations in some places) So from that an aroace would be nicknamed as a ”spadille”.
Edit: I've found out some places use spade as a racial slur. I've found the word Spadille, which is a synonym. I've edited the post to be about spadille instead