These examples (and the term "emanata" as a whole!) come from cartoonist Mort Walker's Lexicon of Comicana. Published in 1980, the book features a comprehensive look at common conventions of comics-making. Including:
The Museum of Cartoon Art defines a cartoon as “any whimsical, facetious graphic expression which parodies any aspect of human behavior.” That’s quite a mouthful, and I don’t really bite on it.
Every child is a cartoonist. We all begin by drawing crude symbols of people and houses and trees. No one ever starts out as a Rembrandt. But Rembrandt started out as a cartoonist. I’m sure his prideful parents gushed over his first drawings with immediate recognition of what he’d had in mind. “Look! A doggie!”
It wasn’t a realistic dog in any sense, but a distillation of the shape of a dog, one that was easily drawn and instantly recognized. It was a cartoon because cartoons are essentially just a group of universally understood symbols put together like a jigsaw puzzle to convey an idea.
You can browse through the whole book HERE thanks to the Internet Archive.
I'm such a nerd for these resources and love seeing people putting them to good use. Long live emanata!