No one has mentioned the Frau[e]nfelder Family
from the cantons of St. Gallen and Aargau.
Amazing, really, since they made such an impact in the United States.

"Snow White and the Seven Dwarves," the Walt Disney feature-length animated film that did so much to make Disney a brand name,
has a "Silly Song" with yodeling in it (by the dwarves).

That song is more like a set-piece, with many moving parts, right down to
the orgasmic sneeze from, who else, Sneezy the dwarf.
And even the yodeling contribution is complicated.
Disney's sound man, a mr. McDonald, did everything but yodel
although one account says that Disney MADE him yodel on the soundstage.

And, yes, the Fraunfelder Family was involved.
So much so, that eventually the Fraunfelder patriarch
took the Disney company to court to sue them about the yodels ...
the judge threw out the suit, complaining that
he, himself, could not tell one yodel from another!
(You can't make this stuff up.)

For more about this yodeling family quartet
and the even larger family from which it came,
see the official Fraunfelder website.