Cheese melting guide
Cheese melting guide
Cheese melting guide
My guess is it's Emmentaler.
This seems to be a very American infographic.
Same for raclette. That's a process, not a cheese name. Might as well call Gruyere "fondue cheese"
I also laugh when folks refer to a cheese variety as "goat."
(A goat is not cheese)
Big, if true.
But, in Switzerland we have type of cheese we call "fromage a raclette", so even if it's a process, we wouldn't use Emmentaler or gruyere for making a raclette.
Emmental