My grandmother used to have a car where the horn was a button at the end of one of the stems. I think it was on the same stem that controlled the wipers. I wish I remembered what kind of car it was. I think it was from the 40s.
First generation Chevy Volt (2011-2016) has a button at the end of the left stem that sounds an alternative polite (aka "pedestrian") horn. It's several very rapid, but somewhat quiet honks, that sound like "brrrap".
I like that. I used to have a car that would give that kind of polite honk with a light press and a louder honk with a harder press. I’ve always wished that were still a thing.
My parents had one of these... I believe it was Ford Corcel from 1978 (https://en.wikipedia.org/wiki/Ford_Corcel), a South American model, according to Wikipedia, based on Renault 12.