I've been struggling with thesauri, learned friends, and hopeless google searches.
The word I'm looking for describes a 'go-to' example or conventionally used style that isn't official. Something like 'traditional' but less to do with history and more to do with popularity. So far the word 'canonical' seems the closest in meaning but it seems a bit too specific or formal for the context. The example of sentences I swear I remember hearing the word in are of this form:
"The _____ fun fact about hippos being the most dangerous animals in Africa".
"The _____ red-and-white-checkered picnic blanket".
"The _____ variable name 'i' used to iterate in programs"
Any suggestions would be greatly appreciated. I worry that I'm simply making this word up but it feels like it's just on the fringes of being remembered.