I don't think I've ever seen any of those except for just plain Slug Bug.
The other game we used to play, probably at least 20 years ago now, was if you saw an oncoming car with a headlight out, you'd yell "sex" and everyone has to touch the ceiling, and then iirc the original spotter got to punch the last person to touch the ceiling. Dunno if that's still a thing or not.
The Jimny Wave is a thing, if we see another person driving a Jimny, we wave to each other.
It used to be people in Jeeps would wave, but people who drive Jeeps (an G-Wagons) are all yuppie snobs.
Occasionally you will see someone in a 2-door Wranger who isn’t a snob…
Fun fact, if you see someone driving a Jeep Wranger with a spare wheel rim, but no tyre, you will immediately know three things about them.
They have replaced their factory tyre with illegally oversized tyres.
They are idiots who do not understand how reality works.
They are of a certain racial group with a caste-based social structure. Manual labour like changing a wheel when they have a flat tyre is beneath their status.