I think I have a few in my library.
Soft Boiled is a visual only comic about an egg. It's pretty cute and colourful but there's still a narrative.
And also Slugworld which I don't know quite how to describe. It's kind of like Kafka did a gag comic. Also well worth checking out. The creator sometimes comments on the forums so you might be able to catch them here to ask questions about non-verbal story telling.
I only do comics with a handful of dialogue but there is still dialogue so I won't put myself here. I will say that I get a second opinion when I've done the first sketches because if you don't have any words, you can't clarify by changing the text. It's better to make sure it's clear when you're still in the pencil stage than later when it's nearly done.
