Some people have better spacial awareness in general. Part of this is also being able to be an outside observer in a sense. People that have these skill-sets will improve faster and seem like "naturals". A lot of them have other sports backgrounds, even a lifetime of sports.

If they are jsut rolling for fun with other people, especially ones with less experience, they can pretty much coast like this until their body breaks down. I'm sure everyone has met people like this. They don't know maybe all kinds of fancy shit or even new stuff, but it doesn't really matter. They still don't get wrecked, are incredibly hard to submit even in bad positions, and tap people out in training anyways.

This won't work at the highest levels but most people aren't there and never will be.