What is the most popular type of kimchi?

I'm curious, as someone who enjoys Korean cuisine, I've often wondered: what is the most popular type of kimchi among Korean food enthusiasts? Is it the traditional napa cabbage kimchi, or do other varieties like cucumber or radish kimchi hold a special place in the hearts of kimchi lovers? I'm eager to learn more about the intricacies of this beloved fermented vegetable dish and the reasons behind its widespread popularity.