>>37868334OP's graph shows that searches for Pokemon SS increased with Sword and Shield's released, implying that's how people will abbreviate it.
However, as of now, googling ss will give you Soul Silver, while swsh is people talking about Sword and Shield. Combined with the fact that Danbooru is using "pokemon_swsh" as their tag for the games, I think SwSh unironically has a chance at becoming the more popular abbreviation in time.
